1. Nyhus LM, Wastell C: Surgery of the stomach and duodenum. Boston, Little, Brown and Company, 1977
2. Mellström D, Rundgren Å: Long-term effects after partial gastrectomy in elderly men: A longitudinal population study of men between 70 and 75 years of age. Scand J Gastroenterol 17:433–439, 1982
3. Krause U: Late prognosis after partial gastrectomy for ulcer. Acta Chir Scand 144:341–354, 1958
4. Westlund K: Mortality of peptic ulcer patients. Acta Med Scand 174(suppl 402), 1963
5. Asano A, Mizuno S, Sasaki R, Aoki K, Yokoyama H, Yokoyama Y: The long-term prognosis of patients gastrectomized for benign gastroduodenal diseases. Jpn J Cancer Res (Gann) 78:337–348, 1987