Gastric bypass.
D000328:Adult; D000368:Aged; D001835:Body Weight; D004381:Duodenal Ulcer / Q000601:surgery; D005763:Gastroenterostomy; D005767:Gastrointestinal Diseases / Q000601:surgery*; D006801:Humans; D007422:Intestines / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000601:surgery*; D011183:Postoperative Complications; D011859:Radiography; D013270:Stomach / Q000601:surgery*