Extracted metadata and corrected image errors

[ieee8023]

We have used the list or articles you found and incorporated them into this dataset by manually reading the articles and recording metadata for each image.

https://github.com/ieee8023/covid-chestxray-dataset

We found a few issues with these images where some were webp files with the png extension. Also, some of the images were referenced wrong. We tried to sort these out. You can look in our metadata.csv file to see the which image we aligned to each article as well as the metadata we extracted for each image.

Thanks for making this list available and we will cite you in our next paper!