1. Department of Breast Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China
2. School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan 650500, P.R. China
3. Department of Endocrine Breast Surgery, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
4. Third Department of Breast Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650118, P.R. China