1965 年 85 巻 1 号 p. 12-15
Drs. Miyata and Enomoto reported six cases of leukemia of patients of the breast cancer treated by radiation from 1941 to 1956. Estimated population at risk was 65, 900 man-years. Observed incidence of 6/65, 900 is significantly higher than an expected incidence of 1.56×10-5 man-years for the same period of observation.