Name	Info	Provider	Link
	subscription/membership/fee required	Elsevier Science	https://linkinghub.elsevier.com/retrieve/pii/S0022-3468(00)57545-9
Achalasia	free resource	Genetic Alliance	https://www.diseaseinfosearch.org/result/99
Swallowing Disorders	free resource	MedlinePlus Health Information	https://medlineplus.gov/swallowingdisorders.html