1. National Institute for Longevity Sciences, National Center for Geriatrics and Gerontology, Morioka, Obu, Aichi, Japan
2. Division of Neurology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
3. The Corporation for Production and Research of Laboratory Primates, Tsukuba, Ibaraki, Japan
4. Faculty of Risk and Crisis Management, Chiba Institute of Science, Shiomi, Choshi, Chiba, Japan
5. Shiga University of Medical Science, Research Center for Animal Life Science, Seta-Tsukinowa, Otsu, Shiga, Japan
6. Department of Diagnosis, Prevention and Treatment of Dementia, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan