^pof;
Cardiology,;
Anyang;
People;
's;
Hospital,;
Anyang;
457000,;
China;
^pHospital;
of;
Xi;
'an;
Jiaotong;
University,;
Xi;
'an;
710061,;
China;
^pof;
Cardiology,;
People's;
Hospital;
of;
Peking;
University,;
Beij'ing;
100044,;
China;