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=34939590.ui
subscription/membership/fee required Wolters Kluwer https://doi.org/10.1097/01.JAA.0000803640.69808.97