Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0190-9622(19)30282-8
Pyoderma gangrenosum	free resource	Genetic Alliance	https://www.diseaseinfosearch.org/result/6111
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=30772334.ui