- Correspondence to Dr Sara A Jahnke, Center for Fire, Rescue and EMS Health Research, National Development and Research Institutes, 1920 W. 143rd Street, Suite 120, Leawood, KS 66224, USA;
- Received October 9, 2012
- Revised December 27, 2012
- Accepted February 1, 2013
- First published March 16, 2013.
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