References
- Fry J. Peptic ulcer: a profile. Br Med J 1964; 2: 809–12
- Greibe J, Bugge P, Gjorup T, Lauritzen T, Bonnevie O, Wulff H R. Long-term prognosis of duodenal ulcer: follow-up study and survey of doctor's estimates. Br Med J 1977; 2: 1572–7
- Krag E. Long-term prognosis in medically treated peptic ulcer. Acta Med Scand 1966; 180: 657–70