1. Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
2. Medical Oncology Department, Korea University Guro Hospital, Seoul, South Korea
3. Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
4. Seoul National University Hospital, Seoul, South Korea
5. Hematology-Oncology, Ajou University School of Medicine, Suwon, South Korea
6. Division of Medical Oncology, Yonsei University, Seoul, South Korea
7. Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea
8. Internal Medicine, Korea University Anam Hospital, Seoul, South Korea
9. Hematology and Oncology, CHA Bundang Medical Center, Seongnam, South Korea
10. Medical Oncology Department, Wonju Severance Christian Hospital, Wonju, South Korea
11. Hemato-Oncology, Inje University Haeundae Paik Hospital, Busan, South Korea
12. Clinical Trial Team, Daehwa Pharmaceutical Co., Ltd., Seoul, South Korea
13. Center of Breast Cancer, National Cancer Center, Goyang, South Korea