1. Department of Internal Medicine, Hirata Central Hospital, Hirata, Fukushima, Japan.
2. Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom.
3. Wako Fukushikai, Wako, Saitama, Japan.
4. Department of Health Informatics, School of Public Health, Kyoto University, Kyoto, Japan.
5. Department of Otolaryngology—Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
6. Department of Internal Medicine, Soma Central Hospital, Soma, Fukushima, Japan.
7. Department of Research, Minamisoma Municipal General Hospital, Minamisoma, Fukushima, Japan.
8. The Institute for Humanistic Studies, Kamakura Women's University, Kamakura, Kanagawa, Japan.
9. Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan.