[1] Shantou Univ, Coll Med, Affiliated Hosp 1, Dept Pediat Surg, Shantou, Peoples R China
[2] Shantou Univ, Coll Med, Affiliated Hosp 2, Dept Pediat Surg, Shantou, Peoples R China
[3] Southern Med Univ, Dept Pediat Surg, Shenzhen Pingshan Dist Womans & Childrens Hosp, Shenzhen, Peoples R China
[4] Shantou Univ, Coll Med, Dept Radiol, Affiliated Hosp 1, Shantou, Peoples R China