diff --git a/scripts/build-modules.js b/scripts/build-modules.js
index d36e763..abfe58b 100644
--- a/scripts/build-modules.js
+++ b/scripts/build-modules.js
@@ -2,10 +2,14 @@ var fs = require('fs')
 
 var argv = process.argv.slice(2);
 
-if(argv.length < 2){
+function usage() {
+  console.log('USAGE: npm run build-modules ../synthea/src/main/resources/modules ../synthea/src/main/resources/modules/lookup_tables ../synthea/src/main/resources/templates/modules/\n\n\n')
+}
+
+if(argv.length < 3){
   console.log('\x1b[1m')
   console.log('\n\nPlease specify directory where synthea modules and lookup tables are located.')
-  console.log('USAGE: npm run build-modules ../synthea/src/main/resources/modules ../synthea/src/test/resources/generic/lookup_tables\n\n\n')
+  usage()
   console.log('Please point to the exact top level generic module directory and lookup table directory')
   console.log('\x1b[0m')
   process.exit()
@@ -21,12 +25,17 @@ if(argv[1].endsWith('/')){
   tableDirectory = argv[1].slice(0,-1)
 }
 
+var templatesDirectory = argv[2]
+if(argv[2].endsWith('/')){
+  templatesDirectory = argv[2].slice(0,-1)
+}
+
 try {
   fs.lstatSync(directory).isDirectory()
 } catch(e){
   console.log('\x1b[1m')
   console.log('\n\nNo such directory ' + directory)
-  console.log('EXAMPLE USAGE: npm run build-modules npm run build-modules ../synthea/src/main/resources/modules ../synthea/src/test/resources/generic/lookup_tables\n\n\n')
+  usage()
   console.log('\x1b[0m')
   process.exit()
 }
@@ -36,7 +45,17 @@ try {
 } catch(e){
   console.log('\x1b[1m')
   console.log('\n\nNo such directory ' + tableDirectory)
-  console.log('EXAMPLE USAGE: npm run build-modules npm run build-modules ../synthea/src/main/resources/modules ../synthea/src/test/resources/generic/lookup_tables\n\n\n')
+  usage()
+  console.log('\x1b[0m')
+  process.exit()
+}
+
+try {
+  fs.lstatSync(templatesDirectory).isDirectory()
+} catch(e){
+  console.log('\x1b[1m')
+  console.log('\n\nNo such directory ' + templatesDirectory)
+  usage()
   console.log('\x1b[0m')
   process.exit()
 }
@@ -63,7 +82,7 @@ var files = walkSync(directory,'.json');
 if(files.length == 0){
   console.log('\x1b[1m')
   console.log('\n\nNo json files located at ' + directory)
-  console.log('EXAMPLE USAGE: npm run build-modules npm run build-modules ../synthea/src/main/resources/modules ../synthea/src/test/resources/generic/lookup_tables\n\n\n')
+  usage()
   console.log('\x1b[0m')
   process.exit()
 }
@@ -150,9 +169,23 @@ try {
 
 fs.writeFileSync(outputFile, output)
 
+var templates = walkSync(templatesDirectory, '.json');
+let output = 'export default {';
+
+for(var i = 0; i< templates.length; i++){
+  var contents = fs.readFileSync(templates[i], 'utf8');
+  var filename = templates[i].replace(templatesDirectory + '/','').replace('.json','')
+  templateOutput += '"' + filename + '":' + contents + "\n,\n"
+}
+templateOutput += '};'
+
+let templatesFile = './src/data/templates.js'
+
+fs.writeFileSync(templatesFile, templateOutput)
 
 console.log('\x1b[1m')
 console.log('\n\nCompleted importing ' + count + ' modules from ' + directory + '\n\n')
-console.log('Overwrite ' + outputFile + ' with new data')
+console.log('Overwrite ' + outputFile + ' with new modules')
+console.log('Wrote ' + templatesFile + ' with templates')
 console.log('Run tests before committing (and no other files should have been changed)')
 console.log('\n\n\x1b[0m')
diff --git a/src/components/menu/LoadModule.js b/src/components/menu/LoadModule.js
index 99e15b4..6ed06d8 100644
--- a/src/components/menu/LoadModule.js
+++ b/src/components/menu/LoadModule.js
@@ -141,6 +141,23 @@ class LoadModule extends Component {
           </ul>
         )
 
+      case 'templates':
+        return (
+          <ul className='LoadModule-list'>
+            { Object.entries(this.state.templates || {}).map(([key, template]) => {
+              return (
+                <li key={key}>
+                    <button className='btn btn-link' onClick={() => {
+                      this.loadModule(JSON.stringify(template))
+                    }}>
+                      {template.name}
+                    </button>
+                </li>
+              )
+            })}
+          </ul>
+        )
+
       case 'my':
         return (
           <ul className='LoadModule-list'>
@@ -243,6 +260,16 @@ class LoadModule extends Component {
     });
   }
 
+  loadTemplates() {
+    if (!this.state.templates) {
+      import("../../data/templates").then(templates => {
+        this.setState({
+          templates: templates.default,
+        });
+      });
+    }
+  }
+
   updateLocalStorageModules() {
     const existingModules = getLocalStorageModules();
 
@@ -341,16 +368,16 @@ class LoadModule extends Component {
   }
 
   componentDidUpdate(prevProps, prevState) {
-    if (
-      this.state.selectedOption === "git" &&
-      prevState.selectedOption !== "git"
-    ) {
+    const changedTo = (option) =>
+      (this.state.selectedOption === option &&
+      prevState.selectedOption !== option);
+
+    if (changedTo("git")) {
       this.fetchBranchList();
-    } else if (
-      this.state.selectedOption === "local-storage" &&
-      prevState.selectedOption !== "local-storage"
-    ) {
+    } else if (changedTo("local-storage")) {
       this.updateLocalStorageModules();
+    } else if (changedTo("templates")) {
+      this.loadTemplates();
     }
   }
 
@@ -391,6 +418,7 @@ class LoadModule extends Component {
                       <ul className='LoadModule-options'>
                          <li className={(this.state.selectedOption === 'core') ? 'selected' : ''}><button className='btn btn-link' onClick={this.onOptionClick('core')}>Core Modules</button></li>
                          <li className={(this.state.selectedOption === 'submodules') ? 'selected' : ''}><button className='btn btn-link' onClick={this.onOptionClick('submodules')}>Submodules</button></li>
+                         <li className={(this.state.selectedOption === 'templates') ? 'selected' : ''}><button className='btn btn-link' onClick={this.onOptionClick('templates')}>Templates</button></li>
                          {Object.keys(this.props.modules).length > 0 ? <li className={(this.state.selectedOption === 'my') ? 'selected' : ''}><button className='btn btn-link' onClick={this.onOptionClick('my')}>My Modules</button></li> : ''}
                          <li className={(this.state.selectedOption === 'json') ? 'selected' : ''}><button className='btn btn-link' onClick={this.onOptionClick('json')}>Paste JSON</button></li>
                          <li className={(this.state.selectedOption === 'git') ? 'selected' : ''}><button className='btn btn-link' onClick={this.onOptionClick('git')}>GitHub Modules</button></li>
diff --git a/src/data/templates.js b/src/data/templates.js
new file mode 100644
index 0000000..4c0bee6
--- /dev/null
+++ b/src/data/templates.js
@@ -0,0 +1,904 @@
+export default {
+"incidence_1":{
+  "name": "Incidence 1",
+  "remarks": [
+    "This template demonstrates an incidence-based approach for modeling condition onset in Synthea."
+  ],
+  "states": {
+    "Initial": {
+      "type": "Initial",
+      "direct_transition": "No_Infection"
+    },
+    "No_Infection": {
+      "type": "Delay",
+      "exact": {
+        "quantity": 1,
+        "unit": "months"
+      },
+      "complex_transition": [
+        {
+          "condition": {
+            "condition_type": "Age",
+            "operator": "<",
+            "quantity": 3,
+            "unit": "years"
+          },
+          "distributions": [
+            {
+              "distribution": 0.02010556,
+              "transition": "Gets_Ear_Infection"
+            },
+            {
+              "distribution": 0.97989444,
+              "transition": "No_Infection"
+            }
+          ]
+        },
+        {
+          "condition": {
+            "condition_type": "Age",
+            "operator": "<",
+            "quantity": 6,
+            "unit": "years"
+          },
+          "distributions": [
+            {
+              "distribution": 0.0131625,
+              "transition": "Gets_Ear_Infection"
+            },
+            {
+              "distribution": 0.9868375,
+              "transition": "No_Infection"
+            }
+          ]
+        },
+        {
+          "condition": {
+            "condition_type": "Age",
+            "operator": "<",
+            "quantity": 18,
+            "unit": "years"
+          },
+          "distributions": [
+            {
+              "distribution": 0.0007444,
+              "transition": "Gets_Ear_Infection"
+            },
+            {
+              "distribution": 0.99925556,
+              "transition": "No_Infection"
+            }
+          ]
+        },
+        {
+          "condition": {
+            "condition_type": "Age",
+            "operator": ">=",
+            "quantity": 18,
+            "unit": "years"
+          },
+          "distributions": [
+            {
+              "distribution": 0.00020833,
+              "transition": "Gets_Ear_Infection"
+            },
+            {
+              "distribution": 0.99979167,
+              "transition": "No_Infection"
+            }
+          ]
+        }
+      ]
+    },
+    "Gets_Ear_Infection": {
+      "type": "ConditionOnset",
+      "target_encounter": "Ear_Infection_Encounter",
+      "codes": [
+        {
+          "system": "SNOMED-CT",
+          "code": "65363002",
+          "display": "Otitis media"
+        }
+      ],
+      "direct_transition": "Ear_Infection_Encounter"
+    },
+    "Ear_Infection_Encounter": {
+      "type": "Encounter",
+      "encounter_class": "outpatient",
+      "reason": "Gets_Ear_Infection",
+      "codes": [
+        {
+          "system": "SNOMED-CT",
+          "code": "185345009",
+          "display": "Encounter for symptom"
+        }
+      ],
+      "direct_transition": "Ear_Infection_Prescribed_OTC_Painkiller"
+    },
+    "Ear_Infection_Prescribed_OTC_Painkiller": {
+      "type": "MedicationOrder",
+      "codes": [
+        {
+          "system": "RxNorm",
+          "code": "1234",
+          "display": "RxNorm Code"
+        }
+      ],
+      "direct_transition": "End_Encounter"
+    },
+    "End_Encounter": {
+      "type": "EncounterEnd",
+      "direct_transition": "New_State"
+    },
+    "New_State": {
+      "type": "Delay",
+      "distribution": {
+        "kind": "EXACT",
+        "parameters": {
+          "value": 2
+        }
+      },
+      "unit": "weeks",
+      "direct_transition": "New_State_2"
+    },
+    "New_State_2": {
+      "type": "MedicationEnd",
+      "direct_transition": "No_Infection",
+      "medication_order": "Ear_Infection_Prescribed_OTC_Painkiller"
+    }
+  },
+  "gmf_version": 1
+}
+,
+"incidence_2":{
+  "name": "Incidence 2",
+  "remarks": [
+    "This template demonstrates an incidence-based approach for modeling condition onset in Synthea."
+  ],
+  "states": {
+    "Initial": {
+      "type": "Initial",
+      "remarks": [
+        "Initial impl == direct translation of ruby module"
+      ],
+      "direct_transition": "Age_Guard"
+    },
+    "Age_Guard": {
+      "type": "Guard",
+      "allow": {
+        "condition_type": "Age",
+        "operator": ">=",
+        "quantity": 18,
+        "unit": "years",
+        "value": 0
+      },
+      "direct_transition": "Set_Yearly_Risk"
+    },
+    "Set_Yearly_Risk": {
+      "type": "Simple",
+      "remarks": [
+        "By age 55 years, cumulative incidence of hypertension was 75.5% in black men, 75.7% in black women, 54.5% in white men, and 40.0% in white women -- https://www.ahajournals.org/doi/full/10.1161/JAHA.117.007988",
+        "",
+        "",
+        "Cumulative Incidence  = 1 - e(-IR x D)",
+        "e^(-IRxD) = 1 - CI",
+        "-IR x D = ln(1-CI)",
+        "IR = -ln(1-CI)/D",
+        "",
+        "Assuming 0% at age 18, and per the chart the increase is roughly linear, use the following yearly incidence rates:",
+        "",
+        "",
+        "black men - 3.8%",
+        "black women - 3.8%",
+        "white men - 2.1%",
+        "white women - 1.4%",
+        "others - 2.5% (just a value in the middle, no source)"
+      ],
+      "conditional_transition": [
+        {
+          "transition": "Black",
+          "condition": {
+            "condition_type": "Race",
+            "race": "Black"
+          }
+        },
+        {
+          "transition": "White",
+          "condition": {
+            "condition_type": "Race",
+            "race": "White"
+          }
+        },
+        {
+          "transition": "Others"
+        }
+      ]
+    },
+    "Chance_of_Hypertension": {
+      "type": "Simple",
+      "complex_transition": [
+        {
+          "distributions": [
+            {
+              "transition": "Onset_Hypertension",
+              "distribution": {
+                "attribute": "risk_of_hypertension",
+                "default": 0.05
+              }
+            },
+            {
+              "transition": "Wait_till_next_year",
+              "distribution": 0.95
+            }
+          ]
+        }
+      ],
+      "remarks": [
+        "Use the risk set above, but also check if some other module may have set hypertension == true"
+      ]
+    },
+    "Wait_till_next_year": {
+      "type": "Delay",
+      "distribution": {
+        "kind": "EXACT",
+        "parameters": {
+          "value": 1
+        }
+      },
+      "unit": "years",
+      "direct_transition": "Chance_of_Hypertension"
+    },
+    "Onset_Hypertension": {
+      "type": "SetAttribute",
+      "attribute": "hypertension",
+      "value": true,
+      "direct_transition": "Wellness_Encounter"
+    },
+    "Black": {
+      "type": "Simple",
+      "conditional_transition": [
+        {
+          "transition": "Black_Female",
+          "condition": {
+            "condition_type": "Gender",
+            "gender": "F"
+          }
+        },
+        {
+          "transition": "Black_Male"
+        }
+      ]
+    },
+    "White": {
+      "type": "Simple",
+      "conditional_transition": [
+        {
+          "transition": "White_Female",
+          "condition": {
+            "condition_type": "Gender",
+            "gender": "F"
+          }
+        },
+        {
+          "transition": "White_Male"
+        }
+      ]
+    },
+    "Others": {
+      "type": "SetAttribute",
+      "attribute": "risk_of_hypertension",
+      "direct_transition": "Chance_of_Hypertension",
+      "value": 0.025
+    },
+    "Black_Female": {
+      "type": "SetAttribute",
+      "attribute": "risk_of_hypertension",
+      "direct_transition": "Chance_of_Hypertension",
+      "value": 0.038
+    },
+    "Black_Male": {
+      "type": "SetAttribute",
+      "attribute": "risk_of_hypertension",
+      "direct_transition": "Chance_of_Hypertension",
+      "value": 0.038
+    },
+    "White_Male": {
+      "type": "SetAttribute",
+      "attribute": "risk_of_hypertension",
+      "direct_transition": "Chance_of_Hypertension",
+      "value": 0.021
+    },
+    "White_Female": {
+      "type": "SetAttribute",
+      "attribute": "risk_of_hypertension",
+      "direct_transition": "Chance_of_Hypertension",
+      "value": 0.014
+    },
+    "Diagnose_Hypertension": {
+      "type": "ConditionOnset",
+      "codes": [
+        {
+          "system": "SNOMED-CT",
+          "code": 59621000,
+          "display": "Essential hypertension (disorder)"
+        }
+      ],
+      "assign_to_attribute": "hypertension_dx",
+      "direct_transition": "Terminal"
+    },
+    "Wellness_Encounter": {
+      "type": "Encounter",
+      "reason": "hypertension_screening_reason",
+      "direct_transition": "Diagnose_Hypertension",
+      "codes": [
+        {
+          "system": "SNOMED-CT",
+          "code": "1234",
+          "display": "SNOMED Code"
+        }
+      ],
+      "encounter_class": "ambulatory",
+      "telemedicine_possibility": "none"
+    },
+    "Terminal": {
+      "type": "Terminal"
+    }
+  },
+  "gmf_version": 1
+}
+,
+"keep":{
+  "name": "Generated Keep Module", 
+  "states": { 
+    "Initial": { 
+      "type": "Initial", 
+      "name": "Initial", 
+      "conditional_transition": [ 
+        { 
+          "transition": "Keep", 
+          "condition": { 
+            "condition_type": "And", 
+            "conditions": [ 
+              { 
+                "condition_type": "Active Condition", 
+                "codes": [ 
+                  { 
+                    "system": "SNOMED-CT", 
+                    "code": "26929004", 
+                    "display": "Alzheimer's disease (disorder)" 
+                  } 
+                ] 
+              } 
+            ] 
+          } 
+        }, 
+        { 
+          "transition": "Terminal" 
+        } 
+      ] 
+    }, 
+    "Terminal": { 
+      "type": "Terminal", 
+      "name": "Terminal" 
+    }, 
+    "Keep": { 
+      "type": "Terminal", 
+      "name": "Keep" 
+    } 
+  }, 
+  "gmf_version": 2 
+} 
+ 
+,
+"onset_distribution":{
+  "name": "Onset Distribution",
+  "remarks": [
+    "This template demonstrates a distribution-based approach for modeling age of condition onset in Synthea."
+  ],
+  "states": {
+    "Initial": {
+      "type": "Initial",
+      "direct_transition": "Age_Guard"
+    },
+    "Age_Guard": {
+      "type": "Guard",
+      "allow": {
+        "condition_type": "Age",
+        "operator": ">=",
+        "quantity": 18,
+        "unit": "years"
+      },
+      "direct_transition": "Veteran_Diabetes_Prevalence"
+    },
+    "Eventual_Prediabetes": {
+      "type": "Delay",
+      "range": {
+        "low": 0,
+        "high": 37,
+        "unit": "years"
+      },
+      "remarks": [
+        "we assume that diabetes and prediabetes generally onset between the ages of 18-55"
+      ],
+      "direct_transition": "Onset_Prediabetes"
+    },
+    "Eventual_Diabetes": {
+      "type": "SetAttribute",
+      "attribute": "time_until_diabetes_onset",
+      "direct_transition": "Already_age_18",
+      "remarks": [
+        "we assume that diabetes and prediabetes generally onset between the ages of 18-55",
+        "this tracks a little lower so that we can diagnose prediabetes early and then diabetes later",
+        "there is little info on how many patients with prediabetes progress to diabetes",
+        "so we assume that 38% of patients with diabetes had a prediabetes diagnosis"
+      ],
+      "distribution": {
+        "kind": "GAUSSIAN",
+        "parameters": {
+          "mean": 55,
+          "standardDeviation": 15
+        }
+      }
+    },
+    "Onset_Prediabetes": {
+      "type": "SetAttribute",
+      "attribute": "prediabetes",
+      "value": true,
+      "direct_transition": "No_Diabetes"
+    },
+    "No_Diabetes": {
+      "type": "Terminal"
+    },
+    "Onset_Prediabetes_Towards_Diabetes": {
+      "type": "ConditionOnset",
+      "codes": [
+        {
+          "system": "SNOMED-CT",
+          "code": "1234",
+          "display": "SNOMED Code"
+        }
+      ],
+      "direct_transition": "Terminal"
+    },
+    "Veteran_Diabetes_Prevalence": {
+      "type": "Simple",
+      "distributed_transition": [
+        {
+          "transition": "Eventual_Diabetes",
+          "distribution": 0.25
+        },
+        {
+          "transition": "Eventual_Prediabetes",
+          "distribution": 0.45
+        },
+        {
+          "transition": "No_Diabetes",
+          "distribution": 0.3
+        }
+      ]
+    },
+    "Onset_Prediabetes_2": {
+      "type": "SetAttribute",
+      "attribute": "prediabetes",
+      "direct_transition": "Delay_Another_Year",
+      "value": true
+    },
+    "Countdown to Diabetes": {
+      "type": "Counter",
+      "attribute": "time_until_diabetes_onset",
+      "action": "decrement",
+      "distributed_transition": [
+        {
+          "transition": "Onset_Prediabetes_2",
+          "distribution": 0.05
+        },
+        {
+          "transition": "Delay_Another_Year",
+          "distribution": 0.95
+        }
+      ]
+    },
+    "Already_age_18": {
+      "type": "Counter",
+      "attribute": "time_until_diabetes_onset",
+      "action": "decrement",
+      "conditional_transition": [
+        {
+          "transition": "Onset_Prediabetes_Towards_Diabetes",
+          "condition": {
+            "condition_type": "Attribute",
+            "attribute": "time_until_diabetes_onset",
+            "operator": "<=",
+            "value": 0
+          }
+        },
+        {
+          "transition": "Countdown to Diabetes"
+        }
+      ],
+      "amount": 18
+    },
+    "Delay_Another_Year": {
+      "type": "Delay",
+      "distribution": {
+        "kind": "EXACT",
+        "parameters": {
+          "value": 1
+        }
+      },
+      "unit": "years",
+      "conditional_transition": [
+        {
+          "transition": "Onset_Prediabetes_Towards_Diabetes",
+          "condition": {
+            "condition_type": "Attribute",
+            "attribute": "time_until_diabetes_onset",
+            "operator": "<=",
+            "value": 0
+          }
+        },
+        {
+          "transition": "Countdown to Diabetes"
+        }
+      ]
+    },
+    "Terminal": {
+      "type": "Terminal"
+    }
+  },
+  "gmf_version": 1
+}
+,
+"prevalence":{
+  "name": "Prevalence",
+  "remarks": [
+    "This template demonstrates a 'Pure Prevalence' type approach of modeling condition onset in Synthea."
+  ],
+  "states": {
+    "Initial": {
+      "type": "Initial",
+      "conditional_transition": [
+        {
+          "transition": "Female",
+          "condition": {
+            "condition_type": "Gender",
+            "gender": "F"
+          }
+        },
+        {
+          "transition": "Male",
+          "condition": {
+            "condition_type": "Gender",
+            "gender": "M"
+          }
+        },
+        {
+          "transition": "Terminal"
+        }
+      ]
+    },
+    "Terminal": {
+      "type": "Terminal"
+    },
+    "Female": {
+      "type": "Simple",
+      "remarks": [
+        "North American Indians have the highest reported rates of cholelithiasis, afflicting 64.1% of women and 29.5% of men. White Americans have an overall prevalence of 16.6% in women and 8.6% in men. Intermediate prevalence rates occur in Asian populations and Black Americans (13.9% of women; 5.3% of men)",
+        "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3343155/",
+        "The age-adjusted prevalence of gallstone disease (gallstones + cholecystectomy) among Mexican American men (7.2%) was 1.7 times that of Cuban American men and 1.8 times that of Puerto Rican men. The prevalence for Mexican American women (23.2%) was 1.5 times that of Cuban American women and 1.7 times that of Puerto Rican women.",
+        "https://www.ncbi.nlm.nih.gov/pubmed/2642879"
+      ],
+      "complex_transition": [
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "Native"
+          },
+          "distributions": [
+            {
+              "transition": "Female_Gallstone_Formation",
+              "distribution": 0.641
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.359
+            }
+          ]
+        },
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "White"
+          },
+          "distributions": [
+            {
+              "transition": "Female_Gallstone_Formation",
+              "distribution": 0.166
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.834
+            }
+          ]
+        },
+        {
+          "distributions": [
+            {
+              "transition": "Female_Gallstone_Formation",
+              "distribution": 0.139
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.861
+            }
+          ],
+          "condition": {
+            "condition_type": "Race",
+            "race": "Black"
+          }
+        },
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "Asian"
+          },
+          "distributions": [
+            {
+              "transition": "Female_Gallstone_Formation",
+              "distribution": 0.139
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.861
+            }
+          ]
+        },
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "Hispanic"
+          },
+          "distributions": [
+            {
+              "transition": "Female_Gallstone_Formation",
+              "distribution": 0.232
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.768
+            }
+          ]
+        }
+      ]
+    },
+    "Male": {
+      "type": "Simple",
+      "remarks": [
+        "North American Indians have the highest reported rates of cholelithiasis, afflicting 64.1% of women and 29.5% of men. White Americans have an overall prevalence of 16.6% in women and 8.6% in men. Intermediate prevalence rates occur in Asian populations and Black Americans (13.9% of women; 5.3% of men)",
+        "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3343155/",
+        "The age-adjusted prevalence of gallstone disease (gallstones + cholecystectomy) among Mexican American men (7.2%) was 1.7 times that of Cuban American men and 1.8 times that of Puerto Rican men. The prevalence for Mexican American women (23.2%) was 1.5 times that of Cuban American women and 1.7 times that of Puerto Rican women.",
+        "https://www.ncbi.nlm.nih.gov/pubmed/2642879"
+      ],
+      "complex_transition": [
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "Native"
+          },
+          "distributions": [
+            {
+              "transition": "Male_Gallstone_Formation",
+              "distribution": 0.295
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.705
+            }
+          ]
+        },
+        {
+          "distributions": [
+            {
+              "transition": "Male_Gallstone_Formation",
+              "distribution": 0.0866
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.9134
+            }
+          ],
+          "condition": {
+            "condition_type": "Race",
+            "race": "White"
+          }
+        },
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "Black"
+          },
+          "distributions": [
+            {
+              "transition": "Male_Gallstone_Formation",
+              "distribution": 0.053
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.947
+            }
+          ]
+        },
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "Asian"
+          },
+          "distributions": [
+            {
+              "transition": "Male_Gallstone_Formation",
+              "distribution": 0.053
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.947
+            }
+          ]
+        },
+        {
+          "condition": {
+            "condition_type": "Race",
+            "race": "Hispanic"
+          },
+          "distributions": [
+            {
+              "transition": "Male_Gallstone_Formation",
+              "distribution": 0.072
+            },
+            {
+              "transition": "Terminal",
+              "distribution": 0.928
+            }
+          ]
+        }
+      ]
+    },
+    "Female_Gallstone_Formation": {
+      "type": "Simple",
+      "distributed_transition": [
+        {
+          "transition": "Age_20-29",
+          "distribution": 0.0718
+        },
+        {
+          "transition": "Age_30-39",
+          "distribution": 0.1127
+        },
+        {
+          "transition": "Age_40-49",
+          "distribution": 0.1735
+        },
+        {
+          "transition": "Age_50-59",
+          "distribution": 0.2763
+        },
+        {
+          "transition": "Age_60-74",
+          "distribution": 0.3657
+        }
+      ],
+      "remarks": [
+        "Distribution of gallbladder disease prevalence by sex and age from Table 1: https://www.gastrojournal.org/article/S0016-5085(99)70456-7/pdf",
+        "(Age prevalence percentages were converted to a proportion of the total prevalence, given the race and sex distribution already in place)"
+      ]
+    },
+    "Male_Gallstone_Formation": {
+      "type": "Simple",
+      "distributed_transition": [
+        {
+          "transition": "Age_20-29",
+          "distribution": 0.0274
+        },
+        {
+          "transition": "Age_30-39",
+          "distribution": 0.04
+        },
+        {
+          "transition": "Age_40-49",
+          "distribution": 0.1537
+        },
+        {
+          "transition": "Age_50-59",
+          "distribution": 0.2463
+        },
+        {
+          "transition": "Age_60-74",
+          "distribution": 0.5326
+        }
+      ],
+      "remarks": [
+        "Distribution of gallbladder disease prevalence by sex and age from Table 1: https://www.gastrojournal.org/article/S0016-5085(99)70456-7/pdf",
+        "(Age prevalence percentages were converted to a proportion of the total prevalence, given the race and sex distribution already in place)"
+      ]
+    },
+    "Age_20-29": {
+      "type": "Delay",
+      "direct_transition": "Gallstones",
+      "range": {
+        "low": 20,
+        "high": 29,
+        "unit": "years"
+      }
+    },
+    "Age_30-39": {
+      "type": "Delay",
+      "direct_transition": "Gallstones",
+      "range": {
+        "low": 30,
+        "high": 39,
+        "unit": "years"
+      }
+    },
+    "Age_40-49": {
+      "type": "Delay",
+      "direct_transition": "Gallstones",
+      "range": {
+        "low": 40,
+        "high": 49,
+        "unit": "years"
+      }
+    },
+    "Age_50-59": {
+      "type": "Delay",
+      "direct_transition": "Gallstones",
+      "range": {
+        "low": 50,
+        "high": 59,
+        "unit": "years"
+      }
+    },
+    "Age_60-74": {
+      "type": "Delay",
+      "direct_transition": "Gallstones",
+      "range": {
+        "low": 60,
+        "high": 74,
+        "unit": "years"
+      }
+    },
+    "Gallstones": {
+      "type": "ConditionOnset",
+      "target_encounter": "Cholecystitis_Encounter",
+      "codes": [
+        {
+          "system": "SNOMED-CT",
+          "code": 235919008,
+          "display": "Cholelithiasis"
+        }
+      ],
+      "remarks": [
+        "Up to 80% will never experience biliary pain or complications such as acute cholecystitis, cholangitis, or pancreatitis",
+        "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3343155/"
+      ],
+      "direct_transition": "Cholecystitis_Encounter"
+    },
+    "Cholecystitis_Encounter": {
+      "type": "Encounter",
+      "encounter_class": "emergency",
+      "codes": [
+        {
+          "system": "SNOMED-CT",
+          "code": "50849002",
+          "display": "Emergency room admission (procedure)"
+        }
+      ],
+      "remarks": [
+        "The ratio of LC performed increased from 83% in 1998 to 93% in 2005; 12% of cases were attempted laparoscopically but converted to OC.",
+        "https://www.ncbi.nlm.nih.gov/pubmed/18656637"
+      ],
+      "direct_transition": "Terminal"
+    }
+  },
+  "gmf_version": 1
+}
+,
+};
\ No newline at end of file