1. Epidemiological evaluation of the protective effect for dying of stomach cancer by screening programme for stomach cancer with applying a method of case–control study;Abe;Nippon Shokakibyo Gakkai Zassi,1995
2. Use of case–control studies in evaluation of screening programmes;Berrino,1984
3. The 1996 annual report of mass screening for digestive organs;Committee of National Statistics;J. Gastroenterol. Mass Survey,1999
4. Standardized method of gastric photofluorography (in Japanese);Committee of Photofluorography;J. Gastroenterol. Mass Survey,1984
5. Case–control studies of cancer screening: theory and practice;Cronin;J. Natl. Cancer. Inst.,1998