Institution: | 1. Department of Pediatrics, Peking University First Hospital, No.1 Xi''an Men Street, West District, Beijing 100034, China;2. Department of Neurology, Peking University First Hospital, Beijing 100034, China;3. Department of Neurology, Xi''an Children''s Hospital, Xi''an, Shaanxi 710003, China;4. National Center of Neurology and Psychiatry, National Center Hospital, Kodaira, Tokyo 187-8551, Japan |