Stereotactic body radiotherapy compared with video‐assisted thoracic surgery after propensity‐score matching in elderly patients with pathologically‐proven early‐stage non‐small ce... oleh Xiao‐ye Liu, Miao‐Miao Gao, Ze‐yuan Cheng, Zheng‐Kun Cai, Lu Yu, Geng‐Min Niu, Jun‐Yi Li, Yu Bai, Shu‐Zhou Zhao, Yong‐Chun Song, Xiao‐Guang Wang, Yang Dong, Xu‐yao Yu, Zhen Tao, Zhi‐Yong Yuan