Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0028-3908(11)00455-2
Insomnia	free resource	MedlinePlus Health Information	https://medlineplus.gov/insomnia.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=22019562.ui
OX2 receptor - data and references	free resource	Guide to Pharmacology	https://www.guidetopharmacology.org/GRAC/ObjectDisplayForward?objectId=322
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:22019562