1. Beijing Tiantan Hospital, Capital Medical University; Department of Cardiology; No. 6 Tiantanxili Dongcheng District Beijing Beijing China 100050
2. Allina Health System; United Hospital; 333 Smith Avenue N, Suite 4314 Saint Paul Minnesota USA 55102
3. The First Hospital of Hebei Medical University; Heart Centre; 89 Donggang Road Hebei Province Hebei Province China 050031
4. The First Hospital of Hebei Medical University; Division of Cardiology; 89 Donggang Road Shijiazhuang Hebei Province China 050031