Name Info Provider Link
COVID-19 (Coronavirus Disease 2019) free resource MedlinePlus Health Information https://medlineplus.gov/covid19coronavirusdisease2019.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=37078279.ui
subscription/membership/fee required Wiley https://doi.org/10.1111/1471-0528.17481
Full text from free resource White Rose Research Online https://eprints.whiterose.ac.uk/198627/