Name	Info	Provider	Link
	free resource	American Academy of Family Physicians	https://www.aafp.org/link_out?pmid=21166375
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/d8747
B Vitamins	free resource	MedlinePlus Health Information	https://medlineplus.gov/bvitamins.html
	subscription/membership/fee required	ClinicalKey	https://www.clinicalkey.com/content/playBy?issn=0002-838X&vol=82&issue=12&pgfirst=1533