Esophageal motility and the hiatal hernia.
D000368:Aged; D004945:Esophagoscopy; D004947:Esophagus / Q000503:physiopathology*; D005769:Gastrointestinal Motility; D006548:Hernia, Diaphragmatic / Q000175:diagnosis*; D006801:Humans; D008297:Male