Name Info Provider Link
COVID-19 Vaccines free resource MedlinePlus Health Information https://medlineplus.gov/covid19vaccines.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33835617.ui
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/33835617/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/33835617
subscription/membership/fee required Wiley https://doi.org/10.1111/ced.14673
free resource scite Smart Citations https://scite.ai/reports/33835617
subscription/membership/fee required Silverchair Information Systems https://academic.oup.com/ced/article-lookup/doi/10.1111/ced.14673