Name	Info	Provider	Link
	free resource	J-STAGE, Japan Science and Technology Information Aggregator, Electronic	http://joi.jlc.jst.go.jp/JST.Journalarchive/jts1976/15 Suppl 4.162?lang=en&from=PubMed
Arsenic	free resource	MedlinePlus Health Information	https://medlineplus.gov/arsenic.html