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Submitted on: 22 September 2018.
Revised on: 06 January 2019.
Accepted on: 01 February 2019.
___________________JOURNAL OF SAFETY RESEARCH---PERGAMON-ELSEVIER SCIENCE LTD
Submitted on: 05 March 2017.
Revised on: 12 June 2017.
Accepted on: 26 July 2017.
___________________JOURNAL OF SAFETY RESEARCH---PERGAMON-ELSEVIER SCIENCE LTD
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