Name	Info	Provider	Link
	free resource	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S1323-8930(19)30158-3
Hives	free resource	MedlinePlus Health Information	https://medlineplus.gov/hives.html
	subscription/membership/fee required	Medical Online, Meteo Inc	https://www.medicalonline.jp/meteo_linkout.php?issn=1323-8930&volume=69&issue=2&spage=261