1. Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008 Hunan, China
2. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 Hunan, China
3. Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China