1. Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
2. Department of Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea.
3. Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.
4. Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
5. Cancer Research Institute, Seoul National University, Seoul, Korea.
6. Division of Breast Surgery, Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
7. Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
8. Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
9. Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
10. Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
11. Department of Surgery, College of Medicine, Ewha Womans University, Seoul, Korea.
12. Department of Surgery, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea.
13. Department of Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.
14. Department of Breast Surgery, Gospel Hospital, Kosin University College of Medicine, Busan, Korea.
15. Department of Surgery, Pusan National University, School of Medicine, Busan, Korea.
16. Busan Cancer Center and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
17. Department of Surgery, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University, Daegu, Korea.
18. Department of Surgery, Jeonbuk National University Medical School, Jeonju, Korea.
19. Department of Surgery, Chosun University College of Medicine, Gwangju, Korea.
20. Division of Breast Surgery, Department of Surgery, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
21. Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea.
22. Department of Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea.