1. Department of Cardiology, Anyang People’s Hospital, Anyang, China
2. Department of Cardiology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, China
3. Department of Cardiology, Central China Fuwai Hospital of Zhengzhou University, Central China Fuwai Hospital, Zhengzhou, China
4. Heart Centre of Henan Provincial People’s Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
5. Human Resource Department, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China.