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. 2014 Jun 28;7:407. doi: 10.1186/1756-0500-7-407

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Copyright © 2014 Burri and Maercker; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), 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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AB Interaction effects in predicting PTSD. A) Interaction effects between crime rates and the individual value of ‘stimulation’. B) Interaction effects between road fatality rates and the individual value of ‘stimulation’.