1. Graduate School of Dalian Medical University, Dalian Medical University, Dalian, China
2. Department of Cardiology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China
3. Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
4. Department of Cardiology, Central Hospital Affiliated to Shandong First Medical University, Jinan, China