1. Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
2. Division of Breast Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
3. Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
4. Biomedical Science, Department of Biomedical Science, Asan Medical Center, Seoul, Korea.