1. Department of Cardiology, Second Affiliated Hospital of Harbin Medical University , Harbin , China
2. Department of Cardiology, Second Affiliated Hospital of Harbin Medical University, The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education , Harbin , China
3. National Key Laboratory of Frigid Zone Cardiovascular Diseases(NKLFZCD), Harbin Medical University , Harbin , China