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. 2018 Sep 10;362:k3529. doi: 10.1136/bmj.k3529

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions

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Fig 2 — Hazard ratio of death for patients that are PD-L1 positive and PD-L1 negative assigned to intervention treatment, compared with those in control group. The therapy effects are calculated with fixed effects models. NR=not reported.