1. Department of Public Health, Jichi Medical University
2. Department of Neurosurgery, Nippon Medical School Musashi-Kosugi Hospital
3. Department of Neurology and Neurological Science, Graduate School, Tokyo Medical and Dental University
4. Department of Prion Protein Research, Division of CJD Science and Technology, Tohoku University Graduate School of Medicine
5. Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science