Letter: Restoration of lower-esophageal-sphincter function by operation.
D004943:Esophagogastric Junction / Q000601:surgery; D004947:Esophagus / Q000601:surgery*; D005764:Gastroesophageal Reflux / Q000601:surgery; D006548:Hernia, Diaphragmatic / Q000601:surgery; D006801:Humans; D008722:Methods