1. Department of Breast Surgery, Tangshan People's Hospital, Tangshan, Hebei 063001, P.R. China
2. Department of Clinical Medicine, The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510000, P.R. China
3. Department of Breast Surgery, Tangshan People's Hospital, Tangshan, Hebei 063001, P.R. China