1. Department of Neurology; Beijing Friendship Hospital; Capital Medical University; Beijing China
2. Department of Neurology; George Washington University; Washington DC USA
3. Department of Pathology; Peking Union Medical College Hospital; Chinese Academy of Medical Science; Beijing China
4. Department of Neurology; Qilu Hospital of Shandong University; Jinan China
5. Department of Neurology; Affiliated Hospital of Qingdao University; Qingdao China
6. Key Laboratory of Geriatrics; Beijing Hospital and Beijing Institute of Geriatrics, Ministry of Health; Beijing China
7. Departments of Pharmacology and Physiology; George Washington University; Washington DC USA