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Submitted on: 10 January 2002.
Revised on: 15 April 2002.
Accepted on: 28 April 2002.
___________________Environmental Health and Preventive Medicine
Submitted on: 20 July 2015.
Revised on: 16 September 2015.
Accepted on: 01 November 2015.
___________________Environmental Health and Preventive Medicine
Submitted on: 28 July 2016.
Revised on: 22 October 2016.
Accepted on: 03 November 2016.
___________________Environmental Health and Preventive Medicine
Submitted on: 12 May 2009.
Revised on: 20 June 2009.
Accepted on: 10 August 2009.
___________________Environmental Health and Preventive Medicine
Submitted on: 24 December 2014.
Revised on: 13 March 2015.
Accepted on: 12 April 2015.
___________________Environmental Health and Preventive Medicine