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. 2018 Sep 18;9(6):666–679. doi: 10.1177/2192568218801016

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© The Author(s) 2018

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 5. — Breakdown of occurrences of single and multiple butterfly vertebrae either in isolation or as part of a syndrome. Multiple butterfly vertebrae were associated with the presence of a syndrome: (P < .001).