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Submitted on: 15 October 2011.
Revised on: 21 December 2011.
Accepted on: 03 February 2012.
___________________Journal of Emergency Nursing---ELSEVIER SCIENCE INC
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Submitted on: 24 April 2008.
Revised on: 02 July 2008.
Accepted on: 15 August 2008.
___________________Journal of Emergency Nursing---ELSEVIER SCIENCE INC