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. 2014 Aug 21;12:268. doi: 10.1186/1477-7819-12-268

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© Hwang et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Overall survival curves for 40 non-small-cell lung cancer patients positive or negative for sonic hedgehog expression. Survival was analyzed using the Kaplan-Meier method, and survival differences between the positive and negative groups were compared using a logrank test. Patients with a tumor positive for Shh were found to have significantly poorer survival (P = 0.020).