A multicenter study on surgical procedure selection and risk factor analysis of postoperative complications after TIP and Duckett hypospadias repair oleh YiWei Fang, Ning Sun, HongCheng Song, WeiPing Zhang, YunMan Tang, LuGang Huang, Yi Yang, Min Chao, Hong Ma, JingTi Zhang, XuHui Zhang, ShouLin Li, Ning Li, Chao Chen, DaWei He, WenBo Wu, Hua Xie, Yong Guan