title: Observer variation in assessment of results of surgery for peptic ulceration.
mesh_terms: D003258:Consumer Behavior; D005069:Evaluation Studies as Topic; D005500:Follow-Up Studies; D006801:Humans; D010437:Peptic Ulcer / Q000175:diagnosis / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis; D012008:Recurrence