1. Department of Obstetrics and Gynecology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
2. Department of Hematology, Atomic Bomb Disease and Hibakusha Medicine Unit, Atomic Bomb Disease Institute; Nagasaki University; Nagasaki Japan
3. Department of Laboratory Medicine; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan