| Affiliation: | 1. Department of Neurology, Xiangya Hospital, Central South University, Changsha China ; 2. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha China ; 3. Infection Control Center, Xiangya Hospital, Central South University, Changsha China ; 4. Department of Geriatrics, Second Xiangya Hospital, Central South University, Changsha China ; 5. Department of Neurology, Second Xiangya Hospital, Central South University, Changsha China |
