Name Info Provider Link
Vaccines free resource MedlinePlus Health Information https://medlineplus.gov/vaccines.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=33325540.ui
free resource Wiley https://onlinelibrary.wiley.com/doi/10.1111/sji.13010
free resource scite Smart Citations https://scite.ai/reports/33325540