1. Department of Pharmacology, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
2. Department of Cardiology, Shanxi Medical University First Hospital, Taiyuan, Shanxi 030001, P.R. China
3. Department of Cardiology, Shanxi Medical University Second Hospital, Taiyuan, Shanxi 030001, P.R. China