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Submitted on: 05 January 2006.
Revised on: 08 April 2006.
Accepted on: 25 April 2006.
___________________JOURNAL OF COMMUNITY HEALTH---SPRINGER
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Submitted on: 21 June 2011.
Revised on: 15 July 2011.
Accepted on: 16 August 2011.
___________________JOURNAL OF COMMUNITY HEALTH---SPRINGER
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