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. 2014 Nov 3;5:220. doi: 10.3389/fneur.2014.00220

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Copyright © 2014 Dardis, Milton, Ashby and Shapiro.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Kaplan–Meier plots showing time to death (months). Dotted lines show 95% confidence intervals for the curves. (A) Use of any treatment (vs. none). (B) Use of radiation (vs. none).