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. 2015 Aug 25;10(8):e0136578. doi: 10.1371/journal.pone.0136578

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© 2015 Gong et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 6 — Unfilled and filled symbols represent CK and MFR data, respectively; triangle, square and circle represent 2011, 2012, and 2013, respectively. Dashed and solid lines represent the fitted curves for CK and MFR data, respectively.