Name	Info	Provider	Link
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/28803270/
	subscription/membership/fee required	Springer	https://dx.doi.org/10.1007/s00431-017-2986-9
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/28803270
	free resource	NCI CPTAC Assay Portal	https://assays.cancer.gov/CPTAC-68
	free resource	scite Smart Citations	https://scite.ai/reports/28803270