1. Department of Plastic and Reconstructive Surgery; Tokyo Women's Medical University; 8-1 Kawada-cho, Shinjuku-ku Tokyo 162-8666 Japan
2. Institute of Advanced Biomedical Engineering and Science; Tokyo Women's Medical University; 8-1 Kawada-cho, Shinjuku-ku Tokyo 162-8666 Japan
3. Department of Physiology I (Neurophysiology); Tokyo Women's Medical University; 8-1 Kawada-cho, Shinjuku-ku Tokyo, 162-8666 Japan
4. The Institute of Medical Science; The University of Tokyo; 4-6-1 Shirokanedai, Minato-ku Tokyo, 108-8639 Japan