1. 1. International Agency for Research on Cancer. World Cancer Report. IARC Press, Lyon, 2003.
2. 2. Health and Welfare Statistics Association. Kokumineiseino doukou. Journal of Health and Welfare Statistics Health and Welfare Statistics Association, Tokyo, 2003. (in Japanese)
3. 3. The Editorial Board of the Cancer Statistics in Japan. Cancer Statistics in Japan. Foundation for Promotion of Cancer Research, Tokyo, 2003.
4. 4. Nakachi K, Imai K, Hoshiyama Y, Sasaba T. The joint effects of two factors in the aetiology of oesophageal cancer in Japan. J Epidemiol Community Health 1988; 42: 355-64.
5. 5. Sasaki R, Aoki K, Takeda S. Contribution of dietary habits to esophageal cancer in Japan. Prog Clin Biol Res 1990; 346: 83-92.