Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/0002-9343(91)90670-S
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome	free resource	MedlinePlus Health Information	https://medlineplus.gov/myalgicencephalomyelitischronicfatiguesyndrome.html
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:2042689