Submitted on: 15 September 1999.
Revised on: 02 January 2000.
Accepted on: 05 February 2000.
___________________Journal of Medical and Surgical Research
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Submitted on: 29 December 2013.
Revised on: 25 April 2014.
Accepted on: 15 May 2014.
___________________Journal of Medical and Surgical Research
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Submitted on: 22 August 2009.
Revised on: 29 October 2009.
Accepted on: 16 November 2009.
___________________Journal of Medical and Surgical Research
Submitted on: 01 July 2003.
Revised on: 13 October 2003.
Accepted on: 24 October 2003.
___________________Journal of Medical and Surgical Research
Submitted on: 11 April 2003.
Revised on: 06 May 2003.
Accepted on: 20 May 2003.
___________________Journal of Medical and Surgical Research
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