目的比较免注气腔镜甲状腺手术与注气腔镜甲状腺手术的效果，评价免注气腔镜甲状腺手术的可行性和安全性。方法采用前瞻性随机对照研......

Background In the past several decades we have seen multiple advances in the reconstruction for girls born with vaginal ......