Submitted on: 29 April 2018.
Revised on: 21 June 2018.
Accepted on: 12 July 2018.
___________________HUMAN FACTORS---SAGE PUBLICATIONS INC
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Submitted on: 15 December 2012.
Revised on: 13 January 2013.
Accepted on: 11 March 2013.
___________________HUMAN FACTORS---SAGE PUBLICATIONS INC