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. 2019 Apr 23;15:1176934319843515. doi: 10.1177/1176934319843515

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© The Author(s) 2019

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 6. — (a) Tree by samples $A$ and $B$ . (b) Tree by samples $A$ and $C$ . (c) Tree by samples $C$ and $B$ .