1. Department of Psychosomatic Internal Medicine, Nihon University Itabashi Hospital, Itabashi-ku, Tokyo, Japan
2. Department of Internal Medicine, Division of Respiratory Medicine, Nihon University School of Medicine, Tokyo, Japan
3. Himawari Home Clinic, Chiba, Japan
4. Mizonokuchi Family Clinic, Kanagawa, Japan
5. Aketo Otsuka Clinic, Saitama, Japan