1. Radiation Medical Science Center for the Fukushima Health Management Survey, Fukushima Medical University, Fukushima, Japan
2. Department of Laboratory Medicine, Fukushima Medical University School of Medicine, Fukushima, Japan
3. Department of Environmental Medicine and Population Sciences, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
4. Department of Public Health, Fukushima Medical University School of Medicine, Fukushima, Japan
5. Department of Epidemiology, Fukushima Medical University School of Medicine, Fukushima, Japan
6. Department of Radiation Health Management, Fukushima Medical University School of Medicine, Fukushima, Japan
7. Department of Thyroid and Endocrinology, Fukushima Medical University School of Medicine, Fukushima, Japan
8. Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan