Gastric operations for obesity.
D000328:Adult; D006801:Humans; D008875:Middle Aged; D009765:Obesity / Q000150:complications / Q000628:therapy*; D011178:Postgastrectomy Syndromes / Q000209:etiology; D011183:Postoperative Complications; D012306:Risk; D013270:Stomach / Q000601:surgery*