1 Division of Endocrine and Oncologic Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. [email protected].
2 Division of Endocrine and Oncologic Surgery, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
3 Department of Surgery, Lankenau Medical Center, Wynnewood, PA, USA.
4 Division of Epidemiology and Biostatistics, Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
5 Rena Rowan Breast Center, Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
6 Rena Rowan Breast Center, Abramson Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. [email protected].