Department of Neurology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Neurology The Beijing Moslem People's Hospital Beijing 100054 China;
Department of Neurology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Neurosurgery Jacobs School of Medicine and Biomedical Sciences University at Buffalo Buffalo NY 14201 USA;
Department of Neurosurgery Gates Vascular Institute at Kaleida Health Buffalo NY 14201 USA;
Department of Neurology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Neurology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Neurology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Neurology Xuanwu Hospital Capital Medical University Beijing 100053 China;