1. Department of DentistryNational Center Hospital of Neurology and Psychiatry Kodaira Japan
2. Department of SurgeryNational Center Hospital of Neurology and Psychiatry Kodaira Japan
3. Department of Pathology and Laboratory MedicineNational Center Hospital of Neurology and Psychiatry Kodaira Japan
4. Department of NeuropathologyTokyo Metropolitan Geriatric Hospital and Institute of Gerontology Tokyo Japan
5. Department of Oral and Maxillofacial SurgeryTokai University School of Medicine Tokyo Japan