1. Department of Pharmacology, Yonsei University College of Medicine, Seoul, Korea
2. Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
3. Division of Medical Oncology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
4. Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
5. Department of Pathology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
6. Center for Lung Cancer, National Cancer Center, Goyang-si, South Korea
7. Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, South Korea
8. Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea