Submitted on: 24 August 2002.
Revised on: 28 September 2002.
Accepted on: 03 November 2002.
___________________Journal of Medical and Biomedical Science
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Submitted on: 13 November 2010.
Revised on: 29 December 2010.
Accepted on: 27 February 2011.
___________________Journal of Medical and Biomedical Science
Submitted on: 01 July 2013.
Revised on: 02 September 2013.
Accepted on: 25 October 2013.
___________________Journal of Medical and Biomedical Science
Submitted on: 16 July 2009.
Revised on: 23 August 2009.
Accepted on: 27 September 2009.
___________________Journal of Medical and Biomedical Science
Submitted on: 20 January 2002.
Revised on: 12 May 2002.
Accepted on: 25 May 2002.
___________________Journal of Medical and Biomedical Science
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Submitted on: 13 September 2008.
Revised on: 20 November 2008.
Accepted on: 06 December 2008.
___________________Journal of Medical and Biomedical Science