Affiliation: | aDepartment of Degenerative Neurological Diseases, National Institute of Neuroscience, NCNP, 4-1-1 Ogawahigashi-cho, Kodaira, Tokyo, 187, Japan;bDepartment of Genetics, Research Institute, International Medical Center of Japan, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162, Japan |