Add all COVID-19 pre-print

[Giovanni1085]

Check this: https://github.com/nicholasmfraser/covid19_preprints or use DImensions

[neesjanvaneck]

I believe Dimensions is a good starting point. It includes preprints from:

• arXiv
• bioRxiv
• ChemRxiv
• medRxiv
• JMIR Preprints
• SSRN Electronic Journal
• Research Square

OSF preprint servers seem to be missing.

[vtraag]

It seems that all of these are included in the dataset by https://github.com/nicholasmfraser/covid19_preprints, including OSF preprint servers, right? We can of course also do our own delineation instead of relying on another dataset.