Name	Info	Provider	Link
	free resource	J-STAGE, Japan Science and Technology Information Aggregator, Electronic	https://joi.jlc.jst.go.jp/JST.JSTAGE/cpb/59.1183?from=PubMed
Vitamin C	free resource	MedlinePlus Health Information	https://medlineplus.gov/vitaminc.html
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:21881268
	subscription/membership/fee required	Medical Online, Meteo Inc	https://www.medicalonline.jp/meteo_linkout.php?issn=0009-2363&volume=59&issue=9&spage=1183