Treatment modality and outcomes among early-stage non-small cell lung cancer patients with COPD: a cohort study

Noeul Kang, Sun Hye Shin, Jae Myoung Noh, Danbee Kang, Hojoong Kim, O Jung Kwon, Hongryull Pyo, Yong Chan Ahn, Hong Kwan Kim, Yong Soo Choi, Jhingook Kim, Jae Ill Zo, Young Mog Shim, Juhee Cho, Hye Yun Park