1. Center for Breast Cancer, National Cancer Center, Goyang, Korea.
2. Division of Breast Surgery, Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.
3. Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
6. LeeHaeKyung Breast Thyroid Clinic, Seoul, Korea.
7. Department of Surgery, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
8. Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
9. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
10. Department of Surgery, Breast Care Center, Daerim St. Mary's Hospital, Seoul, Korea.
11. Department of Surgery, Kyung Hee University Hospital at Gangdong, Seoul, Korea.
12. Department of Oncology, University of Ulsan College of Medicine, Seoul, Korea.
13. Department of Surgery, University of Ulsan College of Medicine, Seoul, Korea.