[1] Peking Univ Peoples Hosp, Dept Cardiol, 11 Xizhimen South St, Beijing, Peoples R China
[2] Nanjing Med Univ, Dept Cardiol, Affiliated Hosp 1, Nanjing, Jiangsu, Peoples R China
[3] Guangdong Gen Hosp, Dept Cardiol, Guangzhou, Guangdong, Peoples R China
[4] Peking Univ First Hosp, Dept Cardiol, 8 Xishiku St, Beijing, Peoples R China