1. Department of Physical Medicine and Rehabilitation, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China
2. Teaching and Research Section of Clinical Nursing, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China
3. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China
4. Department of Neurology, Xiangya Hospital of Central South University, Changsha 410008, Hunan, China