1. Department of Neurology, Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P.R. China
2. Department of Neurology, Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China
3. Shandong Provincial Clinical Research Center for Geriatric Neurological Diseases, Jinan, Shandong, P. R. China
4. Shandong Provincial Key Laboratory of Network based Intelligent Computing, School of Information Science and Engineering, University of Jinan, Jinan, China
5. Department of Neurobiology, Care Sciences and Society, Aging Research Center and Center for Alzheimer Research, Karolinska Institutet-17 Stockholm University, Stockholm, Sweden