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. 2019 Feb 22;7(2):2325967119825835. doi: 10.1177/2325967119825835

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (http://www.creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 2. — Kaplan-Meier survival analysis for players in the surgery and control groups. Year 0 signifies the year of surgery for players in the surgery group and the index year for players in the control group.