1 Research Center for Community Health, Minamisoma Municipal General Hospital, 54-6, 2 Choume, Takami-cho, Haramachi-ku, Minamisoma, Fukushima 975-0033, Japan.
2 Department of Radiation Health Management, Fukushima Medical University School of Medicine, 1 Banchi, Hikarigaoka, Fukushima, Fukushima 960-1247, Japan.
3 Department of Surgery, Jyoban Hospital of Tokiwa Foundation, 57 Banchi, Jyobankamiyunaga-Yamachi, Iwaki, Fukushima 972-8322, Japan.
4 Department of Breast Surgery, Jyoban Hospital of Tokiwa Foundation, 57 Banchi, Jyobankamiyunaga-Yamachi, Iwaki, Fukushima 972-8322, Japan.
5 Department of Internal Medicine, Soma Central Hospital, 5-18, 3 Choume, Okinouchi, Soma, Fukushima 976-0016, Japan.
6 Medical Governance Research Institute, 12-13, 2 Choume, Takanawa, Minato-ku, Tokyo 108-0074, Japan.