O~O~O~O~O~O~O~OOOO~O~O~OOOO~OOOO~OO O~~~O~O~O~O~OOOO~O~O~O~OOOOO~~
人 々ばかりでなく 被 曝 時 年 齢 10~19 歳 のグループにおいても 減 少 しつつあるということである 20 歳 以
.~
1) Y. Shimizu, H. Kato and W. J. Schull: Life span study report 11, Part 2. Cancer mortality in the years 1950-85 based on the recently revised doses (DS86). Radiation Effects Research Foundation Report TR 5-88, 1988. 2 ) D. E. Thompson, K. Mabuchi, E. Ron, M. Soda, M Tokunaga, S. Ochikubo, S. Sugimoto, T. Ikeda, M. Terasaki, S. Izumi and D. L. Preston: Cancer Incidence in atomic bomb survivors. 2. Solid tumors, 1958-1987. Radial Res., 137: Suppl. S17-S67, 1994. 3 ) B. Modan, A. Chetrut, E. Alfandary and L. Katz: Increased risk of breast cancer after low-dose irradiation. Lancet, 629-631, 1989. 4 ) D. A. Pierce, M. Vaeth and D. L. Preston,: Analysis of time and age patterns in cancer risk for A-bomb survivors. Radial Res., 126: 171-186, 1991. 5 ) M. P. Little, M. M. Hawkins, R. E. Shore, M. W. Charles and N. G. Hildreth: Time variations in the risk of cancer following irradiation in childhood. Radiat. Res., 126: 304-316, 1991. 6 ) A. M. Kellerer and D. Barclay: Age dependences of in the modeling of radiation carcinogenesis. Radia- 183
tion-protection Dosimetry, 41: 273-281, 1992. 7 ) R. L. Carter, R. Sposto and D. L. Preston: Estimating the temporal distribution of exposure - related cancers. Radiation on Effects Research Foundation Report CR 4-92, 1992. 8 ) M. P. Little, M. M. Hawkins, M. W. Charles and N. G. Hildreth: Fitting the Armitage Doll model to radiation-exposed cohorts and implications for population cancer risks. Radiat. Res., 132: 207-221, 1992. 9 ) G. A. Sacher and D. Grahn: Survival of mice under duration-of-life exposure to gamma-rays. I. The dosage-survival relation and the lethality function./. Natl Cancer Inst. 32: 277-321, 1964. 10) R. L. Prentice, A. V. Peterson and P. Marek: Dose - mortality relationships in RFM mice following I37 Cs gamma-ray irradiation. Radiat. Res., 90: 57-76, 1982. 11) S. Moolgavkar, F. T. Cross, G. Luebeck and G. E. Dagle: A two-mutation model for radon-induced lung tumors in rats. Radiat. Res., 121: 28-37, 1990. 12) United Nations Scientific committee on the Effects of Atomic Radiation: Sources and Effects of Ionizing Radiation. Annex F. Influence of dose and dose rate on stochastic effects of radiation. United Nations, New York, 1993. 13) International Commission on Radiological Protection: The 1990-1991 Recomendation of the International Commission on Radiological Protection. Publication 60. Ann. ICRP, Pergamon Dress, 1991. 14) S. Sasaki and T. Kasuga: Life-shortening and carcinogenesis in mice irradiated neonatally with X rays. Radiat. Res., 88: 313-325, 1981. 15) S. Sasaki and T. Kasuga: Life shortening and carcinogenesis in mice irradiated at perinatal period with gamma rays. In "Life-Span Radiation Effects Studies in Animals", Ed. R. C. Thompson and j. A. Mahaffey, pp.357-367, National Technical Information, 1986. 16) S. Sasaki: Influence of the age of mice at exposure to radiation on life - shortening and carcinogenesis. /. Radiat. Res., 32, Suppl. 2: 73-85, 1991. 17) S. Sasaki: Age - dependence of susceptibility to carcinogenesis by ionizing radiation in mice. Radiat Environ, Biophys. 30: 205207, 1991. 18) S. Sasaki: Influence of age at radiation exposure on attributable risk in mice. Proceedings of International Congress on Radiation Efects and Protection, pp.223-228, Japan Atomic Energy Research Institute, 1991. 19) S. Sasaki; T. Kasuga, F. Sato and N. Kawashima:, Late effects of fetal mice X-irradiated at middle or late intrauterine stage. Jpn. J. Cancer Res. 69: 167-177, 1978. 20) Y. Yoshimoto, H. Kato and W. J. Schull: Risk of cancer among children exposed in utero to A-bomb radiations, 1950-84. Lancet, 665-669, 1988. 21) A. Stewart, and G. W. Kneale: Radiation dose effects in relation to obstetric x-rays and childhood cancer. Lancet, 1185-1188, 1970.