1. Department of Neurology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, China
2. Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Yuzhong District, Chongqing, China
3. Memory and Aging Center, Department of Neurology, University of California, San Francisco, CA, USA