1. Hypertension Center, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100037, China
2. Department of Cardiology, Kailuan General Hospital, North China University of Science and Technology, Tangshan, Hebei 063000, China
3. Emergency Center, Fuwai Hospital, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100037, China.