The difficulty in assessing the rate of recurrence after proximal gastric vagotomy.
D005500:Follow-Up Studies; D006801:Humans; D010043:Outcome and Process Assessment, Health Care; D010437:Peptic Ulcer / Q000601:surgery*; D012008:Recurrence; D014628:Vagotomy; D014629:Vagotomy, Proximal Gastric