[1] Sumitomo Dainippon Pharma Co Ltd, Tokyo, Japan
[2] Natl Ctr Hosp, Natl Ctr Neurol & Psychiat, Tokyo, Japan
[3] Yokohama City Univ, Yokohama, Kanagawa, Japan
[4] Sagamihara Natl Hosp, Dept Neurol, Sagamihara, Kanagawa, Japan
[5] Shonan Inaho Clin, Hiratsuka, Kanagawa, Japan