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. 2016 Feb 1;16:12. doi: 10.1186/s12874-016-0117-3

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© Chen. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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. 1 — Event-free survival by mechanisms of action. a Treatment effects measured by time to event endpoint when patients receive therapies with different mechanisms of action (i.e., cancer immunotherapy, targeted therapy, and chemotherapy). b Corresponding hazard functions (i.e., risk of event of interest)