1. Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Korea
2. Division of Breast and Endocrine Surgery, Department of Surgery, Korea University Hospital, Korea University College of Medicine, Seoul 02852, Korea
3. Department of Surgery, Samsung Medical Center, Seoul 06351, Korea
4. Department of Breast Cancer Center, Samsung Medical Center, Seoul 06351, Korea