Incompetence of the distal esophageal spincter in infants: its relationship to hiatal hernia.
D004931:Esophageal Achalasia / Q000150:complications; D004947:Esophagus / Q000002:abnormalities*; D005764:Gastroesophageal Reflux / Q000209:etiology*; D006548:Hernia, Diaphragmatic / Q000150:complications*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn