Name	Info	Provider	Link
Porphyria	free resource	MedlinePlus Health Information	https://medlineplus.gov/porphyria.html
Full text from	free resource	Kyushu University Institutional Repository	https://hdl.handle.net/2324/1518321
	subscription/membership/fee required	Medical Online, Meteo Inc	https://www.medicalonline.jp/meteo_linkout.php?issn=0016-254X&volume=106&issue=5&spage=85