1. Department of Surgery, Bucheon St. Mary’s Hospital, Bucheon, Korea.
2. Department of Surgery, College of Medicine, Ewha Womans University, Seoul, Korea.
3. Department of Surgery, Research Institute and Hospital, National Cancer Center, Goyang, Korea.
4. Department of Surgery, Yeungnam University College of Medicine, Daegu, Korea.
5. Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
6. Department of Surgery, Jeonbuk National University Medical School, Jeonju, Korea.
7. Department of Surgery, Seoul St. Mary’s Hospital, Seoul, Korea.
8. Department of Surgery, Breast Cancer Center, Asan Medical Center, Seoul, Korea.