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. 2016 Jul 27;9:4671–4679. doi: 10.2147/OTT.S110339

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© 2016 Tang and Wang. This work is published and licensed by Dove Medical Press Limited

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Kaplan–Meier estimates of (A) PFS and (B) Os in 76 patients who received maintenance therapy and (C) PFS after second-line treatment in 534 patients.

Abbreviations: PFS, progression-free survival; OS, overall survival.