Helicobacter pylori-negative duodenal ulcers : prevalence, clinical characteristics, and prognosis : Results from a randomized trial with 2-year follow-upBYTZER, Peter; TEGLBJAERG, Peter Stubbe.The American journal of gastroenterology. 2001, Vol 96, Num 5, pp 1409-1416, issn 0002-9270Article

Eradication of Helicobacter pylori compared with long-term acid suppression in duodenal ulcer disease: A randomized trial with 2-year follow-upBYTZER, P; AALYKKE, C; RASK-MADSEN, J et al.Scandinavian journal of gastroenterology. 2000, Vol 35, Num 10, pp 1023-1032, issn 0036-5521Article