Kitabatake T, Sakai K, Saito A
Radiology. 1978 Oct;129(1):169-71. doi: 10.1148/129.1.169.
In Japan after 1969, 11 cases of aplastic anemia following radiotherapy for malignant disease were detected. The population at risk in irradiated patients was estimated at 674, 664 man-years. The expected cases of aplastic anemia in this population were calculated as 10.1. There is no statistically significant difference between the expected and the observed values.
1969年后在日本，检测到11例恶性疾病放疗后发生再生障碍性贫血的病例。接受放疗患者的暴露人群估计为674,664人年。该人群中再生障碍性贫血的预期病例数计算为10.1。预期值与观察值之间无统计学显著差异。
