1. Center of Gerontology and Geriatrics West China Hospital, Sichuan University Chengdu China
2. Department of Medical Ultrasound Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China Chengdu China
3. Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital Chengdu China
4. Medical Insurance Office West China Hospital, Sichuan University Chengdu China
5. National Clinical Research Center for Geriatrics West China Hospital, Sichuan University Chengdu China