Lin, Ziying The prevalence and clinicopathological features of programmed death-ligand 1 (PD-L1) expression: a pooled analysis of literatures. [electronic resource] - Oncotarget Mar 2016 - 15033-46 p. digital Publication Type: Journal Article; Meta-Analysis ISSN: 1949-2553 Standard No.: 10.18632/oncotarget.7590 doi Subjects--Topical Terms: B7-H1 Antigen--metabolismBiomarkers, Tumor--metabolismHumansLymphatic MetastasisNeoplasm StagingNeoplasms--metabolismPrognosis