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[Correspondence] The Nagasaki Atomic Bomb Survivors’ Tumor Tissue Bank

The Fukushima nuclear disaster in 2011 raised substantial concerns about the adverse effects of radiation.1,2 However, the effects of varying doses of radiation exposure on the body are not fully understood. 70 years have passed since the atomic bombings of Hiroshima and Nagasaki. Exposure to radiation has long-term effects that contribute to carcinogenesis, and survivors of the atomic bombings are the only available cohort in which these effects can be examined. According to the Japanese Ministry of Health, Labour, and Welfare, 80% of the atomic bomb survivors who were younger than 10 years in 1945 are still alive, and their mean age is now more than 80 years.