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. 2015 May 27;10:118. doi: 10.1186/s13014-015-0421-9

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© Liu et al. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Brain metastasis progression free survival since the initiation of treatment (n = 96): 54 patients exhibited progressive brain disease after local or systemic treatment. The 2-year brain metastasis progression free survival (BM PFS) was 29.6 %, and the estimated BM PFS time was 17 months