1.Department of Cardiology, the First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China;2.Clinical Research Center for Myocardial Injury in Hunan Province, Hengyang, Hunan 421001, China;3.Institute of Cardiovascular Disease, the First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China;4.Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, China)

R5