Name	Info	Provider	Link
	subscription/membership/fee required	HighWire	https://gut.bmj.com/lookup/pmidlookup?view=long&pmid=21303918
GERD	free resource	MedlinePlus Health Information	https://medlineplus.gov/gerd.html
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21303918.ui
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:21303918