[Studies on some problems regarding the closing mechanism of the cardia].
D000818:Animals; D002299:Cardia / Q000502:physiology*; D004285:Dogs; D004943:Esophagogastric Junction / Q000502:physiology*; D004947:Esophagus / Q000502:physiology; D005743:Gastrectomy; D006801:Humans; D008365:Manometry; D011184:Postoperative Period; D013270:Stomach / Q000502:physiology; D014630:Vagus Nerve / Q000502:physiology