1. The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China
2. Department of Neurology, Beijing Hospital, Beijing, China
3. Department of Orthopedic Surgery, David Geffen School of Medicine, University of California, Los Angeles, CA, United States of America
4. Beijing Union University, Beijing, China
5. Department of Cardiology, Beijing Hospital, Beijing, China