Name	Info	Provider	Link
Flu Shot	free resource	MedlinePlus Health Information	https://medlineplus.gov/flushot.html
	subscription/membership/fee required	Taylor & Francis	https://www.tandfonline.com/doi/full/10.3109/10428199909167399
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:10037036