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. 2015 Sep 11;5:14017. doi: 10.1038/srep14017

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Copyright © 2015, Macmillan Publishers Limited

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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CC_ano was calculated using two data sets grouped randomly. CC_anoref is defined as in the main text. The figure was prepared using R³⁶ with ggplot2 package³⁷.