1. Segi, M., Kurihara, M.: Cancer Mortality for Selected Sites in 24 Countries, No. 6 (1966–1967), Tokyo, Japan Cancer Society, 1972
2. Kurihara, M., Aoki, K., Tominaga, S.: Cancer Mortality Statistics in the World, Nagoya, The University of Nagoya Press, 1984
3. Committee of Photofluorography: Standardized method of gastric photofluorography (in Japanese). J. Jpn. Soc. Gastroenterol. Mass Survey62:3, 1984
4. Hisamichi, S., Iwasaki, M., Arisue, T., Yamada, T., Doi, H., Yoshikawa, K., Kita, S., Koga, M., Ono, Y., Houjo, K.: Nationwide statistics of mass screening for digestive organs in 1985 (in Japanese). J. Jpn. Soc. Gastroenterol. Mass Survey76:103, 1987
5. Iwai, S., Hisamichi, S., Asaki, S., Kitamura, H., Masuda, Y., Hazama, K., Nishimura, T., Sato, M., Hanzawa, K., Sato, A., Ohokata, T., Goto, Y., Sugawara, N., Yanbe, T., Shirane, A., Takano, A.: Diagnostic capability of indirect roentgenography as a primary screening method in gastric mass survey (in Japanese). J. Jpn. Soc. Gastroenterol. Mass Survey50:18, 1981