1. Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
2. Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
3. The Key Laboratory of Myocardial Ischemia, Chinese Ministry of Education, Harbin, China
4. Department of Cardiology, Heilongjiang Provincial Hospital, Harbin, China