%0 Journal Article %T Comparison between the first-line and second-line immunotherapy drugs in the progression-free survival and overall survival in advanced non-small cell lung cancer: a systematic review and meta-analysis of randomized controlled trials %A Wu, Shengyu %A Wang, Lei %A Li, Wei %A Chen, Bin %A Liu, Yu %A Wang, Hao %A Zhao, Sha %A Ye, Lingyun %A Sun, Hui %A He, Yayi %J Annals of Palliative Medicine %D 2020 %B 2020 %9 %! Comparison between the first-line and second-line immunotherapy drugs in the progression-free survival and overall survival in advanced non-small cell lung cancer: a systematic review and meta-analysis of randomized controlled trials %K %X %U https://apm.amegroups.org/article/view/57835 %V 10 %N 2 %P 1717-1726 %@ 2224-5839