1. Department of Psychiatry, Graduate School of Medical and Dental Sciences Niigata University Niigata Japan
2. Murakamihamanasu Hospital Murakami Niigata Japan
3. Japan Psychiatric Hospital Association Tokyo Japan
4. Department of Psychiatry, School of Medicine Dokkyo Medical University Mibu Tochigi Japan
5. Department of Psychiatry Shiga University of Medical Science Otsu Shiga Japan
6. Department of Health and Nutrition, Faculty of Health and Nutrition Yamagata Prefectural Yonezawa University of Nutrition Sciences Yonezawa Yamagata Japan