title: Invited commentary.
authors.affiliation: Department of Thoracic Surgery, Center for Lung Cancer, Research Institute and Hospital, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang, Gyeonggi, 410-769, Korea.
authors.forename: Hyun-Sung
authors.initials: HS
authors.lastname: Lee
authors.forename: Jae Ill
authors.initials: JI
authors.lastname: Zo
mesh_terms: D014408:Biomarkers, Tumor / Q000235:genetics*; D002289:Carcinoma, Non-Small-Cell Lung / Q000235:genetics*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics*; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000473:pathology*
chemical_list: D014408:Biomarkers, Tumor