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. 2018 Oct 5;11:6555–6567. doi: 10.2147/OTT.S170836

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© 2018 Casadei Gardini et al. This work is published and licensed by Dove Medical Press Limited

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Forest plots for overall survival showing the tumor size as a continuous variable (A); cutoff of 2 cm (B); cutoff of 3 cm (C); presence of >1 nodules (D).