Department of Cardiology;
Chinese PLA General Hospital;
Beijing;
China;
Department of Cardiology;
Tianjin Chest Hospital;
Tianjin;
China;
Department of Cardiology;
Nanjing First Hospital;
Nanjing;
China;
Department of Cardiology;
Beijing Friendship Hospital Capital Medical University;
Beijing;
China;
Department of Cardiology;
Beijing Chao-yang Hospital;
Capital Medical University;
Beijing;
China;
Department of Cardiology;
Beijing Anzhen Hospital;
Capital Medical University;
Beijing;
China;
Department of Cardiology;
Daqing Oilfield General Hospital;
Daqing;
China;
Department of Cardiology;
Cangzhou Central Hospital;
Cangzhou;
China;
Department of Cardiology;
the Second Affiliated Hospital of Zhejiang University School of Medicine;
Hangzhou;
China;
Department of Cardiology;
the First Hospital of Jilin University;
Changchun;
China;
Department of Cardiology;
Sir Run Run Shaw Hospital Zhejiang University School of Medicine;
Hangzhou;
China;