Submitted on: 02 February 2002.
Revised on: 09 May 2002.
Accepted on: 05 July 2002.
___________________Journal of Evidence-Based Dental Practice
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Submitted on: 25 May 2003.
Revised on: 30 July 2003.
Accepted on: 23 August 2003.
___________________Journal of Evidence-Based Dental Practice
Submitted on: 16 August 2009.
Revised on: 25 October 2009.
Accepted on: 07 December 2009.
___________________Journal of Evidence-Based Dental Practice
Submitted on: 20 April 2009.
Revised on: 26 July 2009.
Accepted on: 24 September 2009.
___________________Journal of Evidence-Based Dental Practice
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