GASTROESOPHAGEAL SPHINCTERIC  FUNCTION AFTER THE HELLER MYOTOMY AND ITS MODIFICATIONS. AN EXPERIMENTAL STUDY.
D000818:Animals; D002299:Cardia; D004285:Dogs; D004941:Esophagitis; D004942:Esophagitis, Peptic; D004944:Esophagoplasty; D012106:Research; D013514:Surgical Procedures, Operative
CARDIA; DOGS; ESOPHAGITIS, PEPTIC; ESOPHAGOPLASTY; EXPERIMENTAL LAB STUDY; SURGERY, OPERATIVE