Submitted on: 16 March 2003.
Revised on: 10 May 2003.
Accepted on: 07 June 2003.
___________________Journal of the American Board of Family Medicine
Submitted on: 01 January 2006.
Revised on: 18 April 2006.
Accepted on: 02 May 2006.
___________________Journal of the American Board of Family Medicine
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Submitted on: 29 May 2005.
Revised on: 05 July 2005.
Accepted on: 17 August 2005.
___________________Journal of the American Board of Family Medicine