Name Info Provider Link
Flu Shot free resource MedlinePlus Health Information https://medlineplus.gov/flushot.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=25291578.ui
free resource scite Smart Citations https://scite.ai/reports/25291578
subscription/membership/fee required Silverchair Information Systems https://jamanetwork.com/journals/jama/fullarticle/10.1001/jama.2014.12609