[1] Huazhong Univ Sci & Technol, Union Hosp, Tongji Med Coll, Dept Pediat Surg, Wuhan, Peoples R China
[2] Capital Med Univ, Beijing Childrens Hosp, Natl Ctr Childrens Hlth, Dept Neonatal Surg, Beijing, Peoples R China
[3] Guangzhou Med Univ, Guangzhou Women & Childrens Med Ctr, Prov Key Lab Res Struct Birth Defect Dis, Guangzhou, Peoples R China
[4] Guangzhou Med Univ, Guangzhou Women & Childrens Med Ctr, Dept Pediat Surg, Guangzhou, Peoples R China