1. Department of Cardiology, Xiamen Cardiovascular Hospital Xiamen University, Xiamen, Fujian 361004, P.R. China
2. Department of Cardiology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, Fujian 361021, P.R. China
3. Department of Intensive Care Unit, Rui Jin Hospital, Luwan Branch, Shanghai Jiao Tong University School of Medicine, Shanghai 200020, P.R. China