1. Functional bowel disorders;Longstreth;Gastroenterology,2006
2. Irritable bowel syndrome. Netter's textbook of internal medicine;Ringel,2009
3. The epidemiology of irritable bowel syndrome in North America: a systematic review;Saito;Am J Gastroenterol,2002
4. Impact of functional gastrointestinal disorders on survival in the community;Chang;Am J Gastroenterol,2010
5. Burden of gastrointestinal, liver, and pancreatic diseases in the United States;Peery;Gastroenterology,2015