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/26404451/
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1007/s00404-015-3899-3
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/26404451
	free resource	scite Smart Citations	https://scite.ai/reports/26404451