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=33070175.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33070175/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/33070175
subscription/membership/fee required Silverchair Information Systems https://academic.oup.com/cid/article-lookup/doi/10.1093/cid/ciaa1595