Chen, Ao Chen, Cai Chen, Changzhe Chen, Chen-yang Chen, De, Department of Cardiology, The First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, China Chen, Fei Chen, Fei Chen, Feng, Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, China Chen, Gecai, Department of Cardiology, Taizhou Renmin Hospital, Taizhou, Jiangsu Province, China Chen, Haifeng Chen, Haiyan Chen, Haiyan, Department of echocardiography, Zhongshan hospital of Fudan university, Shanghai institute of cardiovascular disease, Shanghai, China; Chen, Hui, Capital Medical University Chen, Hui-Chun Chen, Jian-Jun Chen, Jingjing Chen, Jiyan Chen, Jue Chen, Kang Chen, Kangyin Chen, Lee-Wei Chen, Leway, University of Rochester Medical Center, Rochester, New York Chen, Lian Chen, Lianglong, Department of Cardiology, Fujian Medical University Union Hospital Chen, Liming, Shandong Provincial Hospital affiliated to Shandong University