1 Department of Neurology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
2 Department of Neurology, Hengdian hospital of Zhejiang Province, Zhejiang, China
3 Department of Radiology, the First Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang, China
4 Department of Neurology, Tianjin Huanhu Hospital, qixiangtai road 122, Tianjin, 300060, China