1. Wakayama Clinic, 2-3-18 Kanai, Machida-shi, Tokyo 195-0072, Japan
2. Department of Health and Nutrition, University of Human Arts and Sciences, 1288 Magome, Iwatsuki-shi, Saitama 339-8539, Japan
3. Department of Anatomy, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
4. Center for Biotechnology, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
5. Division of Neurology, Machida Keisen Hospital, 2-1-47 Minamimachida, Machida-shi, Tokyo 194-005, Japan