Submitted on: 28 February 2015.
Revised on: 15 June 2015.
Accepted on: 27 June 2015.
___________________Frontiers in Emergency Medicine
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Submitted on: 09 February 2016.
Revised on: 18 April 2016.
Accepted on: 30 April 2016.
___________________Frontiers in Emergency Medicine
Submitted on: 06 June 1999.
Revised on: 02 August 1999.
Accepted on: 23 September 1999.
___________________Frontiers in Emergency Medicine
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