%0 Journal Article %T Local thoracic therapy improve prognosis for stage IV non-small cell lung cancer patients combined with chemotherapy: A Surveillance, Epidemiology, and End Results database analysis %A Dawei Zheng %A GuoDong Xu %A Kaitai Liu %A Shibo Wu %A Zhennan Du %J Archive of "PLoS ONE". %D 2017 %R 10.1371/journal.pone.0187350 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5695532/