1. Department of Radiation Health Management, Fukushima Medical University School of Medicine, 1 Hikariga-oka, Fukushima 960-1295, Japan
2. Department of Internal Medicine, Soma Central Hospital, Okinouchi, Soma 976-0016, Japan
3. Department of Public Health, Fukushima Medical University School of Medicine, 1 Hikariga-oka, Fukushima 960-1295, Japan
4. Health Promotion Center, Fukushima Medical University, 1 Hikariga-oka, Fukushima 960-1295, Japan
5. Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
6. Department of Health Nursing of International Radiation Exposure, Fukushima Medical University School of Medicine, 1 Hikariga-oka, Fukushima 960-1295, Japan