Institution: | 1. Center for Lung Cancer, National Cancer Center, Goyang, Republic of Korea;2. Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea;3. Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Republic of Korea;4. Department of Internal Medicine, Keimyung University Dongsan Hospital, Daegu, Republic of Korea;5. Department of Pathology, National Cancer Center, Goyang, Republic of Korea;6. Department of Radiology, National Cancer Center, Goyang, Republic of Korea |