Depatment;
of;
cardiology,;
The;
First;
People's;
Hospital;
of;
Shun-de,;
Shunde;
Guangdong;
528300,;
China;
Department;
of;
Cardiology,;
Guangdong;
Cardiovascular;
Institute,Guangdong;
Academy;
of;
Medical;
Sciences,;
Guangdong;
General;
Hospital,;
Guangzhou;
510100,;
China;