Name	Info	Provider	Link
Vaccines	free resource	MedlinePlus Health Information	https://medlineplus.gov/vaccines.html
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:6476216
	subscription/membership/fee required	Sheridan PubFactory	https://ajtmh.org/doi/10.4269/ajtmh.1984.33.684