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MLA Citation
Tony S K Mok et al.. “Pembrolizumab versus chemotherapy for previously untreated, PD-L1-expressing, locally advanced or metastatic non-small-cell lung cancer (KEYNOTE-042): a randomised, open-label, controlled, phase 3 trial.” Lancet, vol. 393, no. 10183, 2019, pp. 1819–1830. http://access.bl.uk/ark:/81055/vdc_100081477954.0x00004e