Jovanovic, Dragana Membrane PD-L1 expression and soluble PD-L1 plasma levels in idiopathic pulmonary fibrosis-a pilot study. [electronic resource] - Journal of thoracic disease Dec 2018 - 6660-6669 p. digital Publication Type: Journal Article ISSN: 2072-1439 Standard No.: 10.21037/jtd.2018.11.16 doi