1. Department of Rehabilitation Medicine; Guangzhou First People's Hospital; Guangzhou Medical University; Guangzhou Guangdong People's Republic of China
2. Department of Rehabilitation Medicine; The First Affiliated Hospital; Sun Yat-sen University; Guangzhou Guangdong People's Republic of China
3. Department of Rehabilitation Medicine; Shang Hai General Hospital; Shanghai People's Republic of China
4. Department of Geriatrics; Guangzhou First People's Hospital; Guangzhou Medical University; Guangzhou Guangdong People's Republic of China