Name	Info	Provider	Link
Sleep Apnea	free resource	MedlinePlus Health Information	https://medlineplus.gov/sleepapnea.html
	subscription/membership/fee required	Masson (France)	http://www.em-consulte.com/retrieve/pii/MDOI-AOT-03-1998-115-2-0003-438X-101019-ART72
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:9765701