When do you recommend surgery for peptic ulcer?
D000367:Age Factors; D000368:Aged; D005743:Gastrectomy / Q000401:mortality; D006801:Humans; D007415:Intestinal Obstruction / Q000209:etiology; D010437:Peptic Ulcer / Q000150:complications / Q000601:surgery*; D010438:Peptic Ulcer Hemorrhage / Q000601:surgery; D010439:Peptic Ulcer Perforation / Q000601:surgery; D012306:Risk; D013272:Stomach Diseases / Q000209:etiology; D014628:Vagotomy / Q000401:mortality