1. Department of Galactophore, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
2. Department of Galactophore Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
3. Department of General Surgery, Nanchang University, Nanchang, Jiangxi, 330031, P.R. China
4. Department of General Surgery, Fengcheng People's Hospital, Fengcheng, Jiangxi 331100, P.R. China