1. From the Department of Neurology (Y.A., S.M., T.S., K.S., K. Nakamura, H.K., R.O., M.M., M.O., S.K.), Graduate School of Medicine, Chiba University; School of Medicine (K. Nagashima, Y.S.), Keio University, Tokyo; and Shizuoka Graduate University of Public Health and Kyoto Prefectural University of Medicine (N.K.), Japan.