1. Department of General Practice, School of General Practice and Continuing Education of Capital Medical University, Beijing, China
2. Department of Neurology, XuanWu Hospital of Capital Medical University, Beijing, China
3. Department of Epidemiology and Health Statistics, School of Public Health of Capital Medical University, Beijing, China
4. Radiological Sciences, Division of Clinical Neuroscience, Queen’s Medical Centre, University of Nottingham, Nottingham, UK
5. Sir Peter Mansfield Imaging Centre, School of Medicine, University of Nottingham, Nottingham, UK
6. Department of Neurology, Huashan Hospital of Fudan University, Shanghai, China
7. Department of Psychiatry and Psychotherapy, Medical Faculty, University of Cologne, Cologne, Germany
8. Department of Neurology, Dali People’s Hospital, Yunnan, China
9. Department of Neurology, Hong Xinglong Center Hospital, Heilongjiang, China
10. Department of Neurology, Lanzhou General Hospital of Lanzhou Military Command, Gansu, China
11. Department of Radiology, Youan Hospital of Capital Medical University, Beijing, China
12. Department of General Practice, XuanWu Hospital of Capital Medical University, Beijing, China
13. Department of Neurology, Civil Aviation General Hospital, Beijing, China
14. Department of Neurology, Hongqi Hospital of Mudanjiang Medical University, Heilongjiang, China
15. Department of Library, XuanWu Hospital of Capital Medical University, Beijing, China
16. Department of General Surgery, XuanWu Hospital of Capital Medical University, Beijing, China
17. Center of Alzheimer’s Disease, Beijing Institute for Brain Disorders, Beijing, China
18. Beijing Institute of Geriatrics, Beijing, China
19. National Clinical Research Center for Geriatric Disorders, Beijing, China
20. PKU Care Rehabilitation Hospital, Beijing, China