1. Department of Emergency, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
2. Department of Neurocardiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
3. Pingmo Health Center, Daozhen County, Zunyi, Guizhou, China
4. Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
5. The Fifth Medical College, Capital Medical University, Beijing, China
6. Department of Emergency, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
7. Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, China