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. 2009 Jan 20;100(3):464–469. doi: 10.1038/sj.bjc.6604866

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Copyright © 2009 Cancer Research UK

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Effusion failure-free survival (EFFS) in effusion cytology-negative or -indeterminate patients. In the effusion cytology-negative or -indeterminate patient subset, arm B favoured EFFS. The hazard ratio was 0.39 (95% confidence interval: 0.12–1.21).