?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Ravanelli&rft.aufirst=M&rft.au=Ravanelli%2C+M&rft.issn=1872-7727&rft.pages=251-256&rft.title=European+Journal+of+Radiology&rft.date=September+2019&rft.atitle=Prognostic+and+predictive+value+of+histogram+analysis+in+patients+with+non-small+cell+lung+cancer+refractory+to+platinum+treated+by+nivolumab%3A+A+multicentre+retrospective+study&rft.volume=118&rft.genre=article