1. Department of Cardiac Function Evaluation, Henan Provincial People’s Hospital, Zhengzhou, Henan, China
2. Department of Cardiology, Zhengzhou University People’s Hospital, Zhengzhou, Henan, China
3. Department of Electrocardiology, Fuwai Central China Cardiovascular Hospital, Zhengzhou, Henan, China
4. Department of Cardiology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China
5. Department of Cardiology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
6. Department of Cardiology, Fuwai Central China Hospital, Zhengzhou, Henan, China
7. Department of Cardiology, Henan Provincial People’s Hospital, Zhengzhou, Henan, China