The "changing epidemiology" of mortality in duodenal ulcer hemorrhage.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D004381:Duodenal Ulcer / Q000401:mortality* / Q000601:surgery; D005743:Gastrectomy / Q000401:mortality; D006801:Humans; D008875:Middle Aged; D009657:North Carolina; D010438:Peptic Ulcer Hemorrhage / Q000401:mortality* / Q000601:surgery; D011708:Pylorus / Q000601:surgery; D014628:Vagotomy