1. Medical Governance Research Institute , Minato-ku, Japan
2. School of Medicine, Tohoku University , Sendai City, Japan
3. School of Medicine, Hamamatsu University , Hamamatsu City, Japan
4. Department of Internal Medicine, Soma Central Hospital , Soma City, Japan
5. Department of Internal Medicine, Navitas Clinic Tachikawa , Tachikawa City, Japan
6. Department of Breast and Thyroid Surgery, Jyoban Hospital of Tokiwa Foundation , Iwaki City, Japan