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.