1. A U.S. national survey of upper gastrointestinal symptoms in 21,000 community participants [Abstrac 851];Camilleri;Gastro.,2000
2. Symptomatic gastroesophageal reflux: Incidence and precipitating factors;Nebel;Am J Dig Dis.,1976
3. Pregnancy and the lower esophageal sphincter;Dodils;Gastro.,1978
4. Epidemiology of gastroesophageal reflux disease;Sonnenberg,1997
5. Esophageal diseases;Sonnenberg,1994