[The lower esophageal ring].
D003679:Deglutition; D003680:Deglutition Disorders / Q000209:etiology*; D003964:Diaphragm; D004947:Esophagus / Q000002:abnormalities*; D006547:Hernia; D006548:Hernia, Diaphragmatic / Q000150:complications*; D006801:Humans
DEGLUTITION DISORDERS/etiology; ESOPHAGUS/abnormalities; HERNIA, DIAPHRAGMATIC/complications