1. Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, China
2. Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, Nanjing, China
3. Department of Neurology, Qingdao Municipal Hospital, College of Medicine and Pharmaceutics, Ocean University of China, Qingdao, China