Affiliation: | 1. Department of Neurology, the First Medical Center, Chinese PLA General Hospital, Beijing, China;2. Department of Neurology, the First Medical Center, Chinese PLA General Hospital, Beijing, China International Headache Centre, Chinese PLA General Hospital, Beijing, China Medical School of Chinese PLA, Beijing, China;3. Institute of Geriatrics, Beijing Key Laboratory of Aging and Geriatrics, National Clinical Research Center for Geriatric Diseases, Second Medical Center of Chinese PLA General Hospital, Beijing, China |