Name	Info	Provider	Link
Bone Density	free resource	MedlinePlus Health Information	https://medlineplus.gov/bonedensity.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21052641.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21052641/
	subscription/membership/fee required	Springer	https://doi.org/10.1007/s00198-010-1437-5
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/21052641