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Submitted on: 18 April 2001.
Revised on: 31 July 2001.
Accepted on: 14 August 2001.
___________________Focus on Health Professional Education-A Multidisciplinary Journal
Submitted on: 08 March 2006.
Revised on: 24 May 2006.
Accepted on: 05 June 2006.
___________________Focus on Health Professional Education-A Multidisciplinary Journal
Submitted on: 17 July 1999.
Revised on: 05 September 1999.
Accepted on: 25 October 1999.
___________________Focus on Health Professional Education-A Multidisciplinary Journal