1. Department of Geriatrics, Jiangsu Province Hospital The First Affiliated Hospital of Nanjing Medical University Nanjing China
2. Department of Geriatrics The Affiliated Hospital of Qingdao University Qingdao China
3. Center of Gerontology and Geriatrics, China National Clinical Research Center for Geriatric Medicine West China Hospital, Sichuan University Chengdu China
4. Rehabilitation Medical Center, Jiangsu Province Hospital The First Affiliated Hospital of Nanjing Medical University Nanjing China
5. Beijing Hospital, National Center of Gerontology Institute of Geriatric Medicine, Chinese Academy of Medical Sciences Beijing China
6. Department of Geriatrics, Tongji Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan China