1 Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
2 Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
3 Data Science Team, Hanmi Pharm. Co., Ltd, Seoul, Korea.
4 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Korea.
5 Division of Pulmonology, Center of Lung Cancer, National Cancer Center, Goyang, Korea.
6 Department of Laboratory Medicine, Hospital, National Cancer Center, Goyang, Korea.