10 Division of Hematology and Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.9 Department of Medicine, Centre François Baclesse, Caen, France.8 Department of Medical Oncology, CHA Bundang Medical Center, CHA University, Gyeonggi-Do, Republic of Korea.7 Department of Oncology, Mayo Clinic, Rochester, USA.6 Division of Translational & Clinical Research, National Cancer Center, Goyang, Republic of Korea.5 Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea.4 Lung Cancer Unit, Department of Oncology, Vall d'Hebron University Hospital, Barcelona, Spain Vall d'Hebron Institute of Oncology, Barcelona, Spain.3 Department of Oncology, Clinica Universidad de Navarra, Pamplona, Spain.Electronic address: 2 Department of Thoracic Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands. 1 Department of Medical Oncology, Yale University School of Medicine, Yale Comprehensive Cancer Center, New Haven, USA.