1. Department of Surgery, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea.
2. Division of Breast Surgery, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
3. Division of Breast Surgery, Department of Surgery, University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
4. Department of Surgery, Dankook University College of Medicine, Cheonan, Korea.
5. Department of General Surgery, Myongji Hospital, Goyang, Korea.