1. Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
2. National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, China
3. Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, China, and
4. Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, China