%0 Journal Article %T Evaluating risk factors of radiation pneumonitis after stereotactic body radiation therapy in lung tumor: Meta-analysis of 9 observational studies %A Chi Lu %A Hongbin Wu %A Hongda Lu %A Zhang Lei %J Archive of "PLoS ONE". %D 2018 %R 10.1371/journal.pone.0208637 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6283643/