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. 2019 Apr 1;25(4):255–264. doi: 10.1177/1753425919839125

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© The Author(s) 2019

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work 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 4. — (a) Correlation of SF PACAP levels with IL-1β levels. (b) Correlation of SF PACAP levels with MMP-3 levels. (c) ROC curve analysis for K-L Grade 2 vs Grade 3 and (d) ROC curve analysis for K-L Grade 3 vs Grade 4.