[1] Sichuan Univ, West China Univ Hosp 2, Dept Pediat Cardiol, Chengdu, Sichuan, Peoples R China
[2] Sichuan Univ, West China Univ Hosp 2, West China Inst Women & Childrens Hlth, Cardiac Dev & Early Intervent Unit, Chengdu, Sichuan, Peoples R China
[3] Sichuan Univ, Key Lab Birth Defects & Related Dis Women & Chil, Minist Educ, Chengdu, Sichuan, Peoples R China
[4] Sichuan Univ, West China Med Sch, Chengdu, Sichuan, Peoples R China