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Submitted on: 17 August 2004.
Revised on: 25 September 2004.
Accepted on: 13 October 2004.
___________________AMERICAN JOURNAL OF PREVENTIVE MEDICINE
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Submitted on: 14 November 2001.
Revised on: 24 December 2001.
Accepted on: 17 February 2002.
___________________AMERICAN JOURNAL OF PREVENTIVE MEDICINE
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Submitted on: 05 May 2016.
Revised on: 19 July 2016.
Accepted on: 05 September 2016.
___________________AMERICAN JOURNAL OF PREVENTIVE MEDICINE
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