1. Department of Cardiology, Shenjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
2. Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
3. Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, Liaoning 110122, P.R. China