Submitted on: 27 August 2004.
Revised on: 24 December 2004.
Accepted on: 22 January 2005.
___________________American Journal of Translational Research
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Submitted on: 20 February 2012.
Revised on: 03 June 2012.
Accepted on: 27 June 2012.
___________________American Journal of Translational Research
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Submitted on: 28 July 1998.
Revised on: 25 September 1998.
Accepted on: 29 October 1998.
___________________American Journal of Translational Research