Name	Info	Provider	Link
Iron	free resource	MedlinePlus Health Information	https://medlineplus.gov/iron.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=22377356.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22377356/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/22377356
	subscription/membership/fee required	Cambridge University Press	https://www.cambridge.org/core/product/identifier/S0007114512000360/type/journal_article