Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu 610044 China;
Department of Neurology West China Hospital of Sichuan University Chengdu 610044 China;
Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu 610044 China;
Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu 610044 China;
National Clinical Research Center for Geriatrics West China Hospital Sichuan University Chengdu 610044 China;
Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu 610044 China;
The First Clinical College of Lanzhou University Lanzhou 730000 China;
Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu 610044 China;
Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu 610044 China;
Department of Medical Record West China Second University School Chengdu 610044 China;
Department of Epidemiology and Health Statistics West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu 610044 China;
Department of Neurology West China Hospital of Sichuan University Chengdu 610044 China;