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Submitted on: 22 June 1999.
Revised on: 04 October 1999.
Accepted on: 28 November 1999.
___________________International Journal of Injury Control and Safety Promotion
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Submitted on: 30 May 2010.
Revised on: 23 July 2010.
Accepted on: 24 August 2010.
___________________International Journal of Injury Control and Safety Promotion
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Submitted on: 13 March 2004.
Revised on: 06 May 2004.
Accepted on: 18 May 2004.
___________________International Journal of Injury Control and Safety Promotion
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