1. Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, Shandong Province, China
2. Department of Neurology, Qingdao Municipal Hospital, Nanjing Medical University, Nanjing, China
3. Columbia College, Columbia University, USA
4. Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
5. Memory and Aging Center, Department of Neurology, University of California, San Francisco, USA