Affiliation: | aDepartment of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China;bDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China;cNational Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China |