References
- Dronfield M W, Bachelor A J, Laworthy W, Longman M JS. Controlled trial of maintenance cime-tidine treatment in healed duodenal ulcer: short and long-term effects. Gut 1979; 20: 526–530
- Boyd E JS, Wilson J A, Wormsley K G. Safety of ranitidine maintenance treatment of duodenal ulcer. Scand J Gastroenterol 1984; 19: 394–400
- Bianchi-Porro G, Petrillo M. The natural history of peptic ulcer disease: the influence of H,-antagonist treatment. Scand J Gastroenterol 1986; 21(suppl 121)4–52
- Bank L, Wright J P, Lucke W, Marks I N. Peptic ulcer. A follow-up study. J Clin Gastroenterol 1986; 8: 381–384
- Hirschowitz B I. Natural history of duodenal ulcer (editorial). Gastroenterology 1983; 85: 967–970
- Elashoff L D, Denver G V, Reedy T J, Ippoliti A, Samloff T M, Kurata J, Billing M, Isenberg M. Long-term follow-up of duodenal ulcer. J Clin Gastroenterol 1983; 5: 509–515
- Fry J. Peptic ulcer: a profile. Br Med J 1964; 2: 809–812
- Greibe J, Bugge P, Gjorup T, Lauritzen T, Bon-Nevie O, Wulff H R. Long term prognosis of duodenal ulcer. Follow-up study and survey of doctor's estimate. Br Med J 1977; 2: 1572–1574
- Frederiksen H JB, Matzen P, Kragelund E, Christiansen P M, Bonnevie O. Spontaneous healing of duodenal ulcer. Scand J Gastroenterol 1984; 19: 414–421
- Gibinski K, Rybicka J, Nowak A, Czarnecka K. Seasonal occurrence of abdominal pain and endo-scopic findings in patients with gastric and duodenal ulcer disease. Scand J Gastroenterol 1982; 17: 481–485
- Kaneko E, Nakamura T, Umeda N, Fujino M, Niwa H. Outcome of gastric carcinoma detected by mass survey in Japan. Gut 1977; 18: 626–630
- Boyd E JS, Wormsley K G. Etiology and patho-genesis of peptic ulcer. Bockus gastroenterology. 4th ed, J E Berk. W.B. Saunders Co., Philadelphia 1985; 1013–1059
- Moshal M G, Spitaels J M, Robbs J V, MacLeod I N, Good C J. Eight year experience with 3392 endoscopically proven duodenal ulcer in Durban, 1972–1979. Gut 1981; 22: 327–331
- Hui W M, Lam S K. Multiple duodenal ulcer: natural history and pathophysiology. Gut 1987; 28: 1134–1141
- Kohli Y, Misaki F, Kawai K. Endoscopic follow-up observation of duodenal ulcer. Endoscopy 1972; 4: 202–208
- Jorde R, Burhol P G. Asymptomatic peptic ulcer disease. Scand J Gastroenterol 1987; 22: 129–134
- Boyd E JS, Wilson J A, Wormsley K G. The fate of asymptomatic recurrence of duodenal ulcer. Scand J Gastroenterol 1984; 19: 808–812
- McIntosh J H, Hudson H M, Piper D W. Do symptoms of gastric ulcer become less frequent with time?. Scand J Gastroenterol 1987; 22: 573–576
- Walan A, Bianchi-Porro G, Hentschel E, Bardhan K D, Delattre M. Maintenance treatment with cimetidine in peptic ulcer disease for up to 4 years. Scand J Gastroneterol 1987; 22: 397–404
- Østensen H, Gudmundsen T E, Ostensen M, Burhol P G, Bonnevie O. Smoking, alcohol, coffee, and familial factors: any associations with peptic ulcer disease? A clinically and radiologically prospective study. Scand J Gastroenterol 1985; 20: 1227–1235
- Wormsley K G. Duodenal ulcer: does pathophysiology equal aetiology?. Gut 1983; 24: 775–780
- Hull D H, Beale P J. Cigarette smoking and duodenal ulcer. Gut 1985; 26: 1333–1337
- Ainley C C, Forgacs I C, Keeling P WM, Thompson R PH. Outpatient endoscopic survey of smoking and peptic ulcer. Gut 1986; 27: 648–651