title: Early re-operations after surgery for duodenal ulcer.
mesh_terms: D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000601:surgery; D012086:Reoperation; D013997:Time Factors