Name	Info	Provider	Link
Vitamin D Deficiency	free resource	MedlinePlus Health Information	https://medlineplus.gov/vitaminddeficiency.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/29162164/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/29162164
	subscription/membership/fee required	Cambridge University Press	https://www.cambridge.org/core/product/identifier/S1368980017002816/type/journal_article
	free resource	scite Smart Citations	https://scite.ai/reports/29162164