1. Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea;
2. Division of Hematology and Oncology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea;
3. Center for Breast Cancer, National Cancer Center Korea, Goyang, Gyeonggi, Republic of Korea;
4. Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea;
5. Division of Hemato-oncology, Department of Internal Medicine, Korea University College of Medicine, Korea University Guro Hospital, Seoul, Republic of Korea; and
6. Department of Radiation Oncology,
7. Department of Nuclear Medicine,
8. Department of Radiology, and
9. Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea