Name	Info	Provider	Link
	free resource	MDPI	https://www.mdpi.com/resolver?pii=nu16142251
Vitamin D	free resource	MedlinePlus Health Information	https://medlineplus.gov/vitamind.html
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/39064694/