1. Department of Craniofacial Growth and Developmental Dentistry, Kanagawa Dental College, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan
2. Department of Dentistry, Oral and Maxillofacial Surgery
3. Department of Neurosurgery
4. Functional Brain Science Laboratory
5. Department of Radiology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan