1. Department of Cardiology, Zhejiang Hospital, Hangzhou, China.
2. Department of Cardiology, Taizhou Hospital, Taizhou, China.
3. Department of Medicine, The First Clinical Medical College, Wenzhou Medical University, Wenzhou, China.
4. Department of Internal Medicine, Lihuili Hospital Affiliated Ningbo University, Ningbo, China.
5. Department of Medicine, The Second College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China.