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Submitted on: 03 November 2003.
Revised on: 28 November 2003.
Accepted on: 27 December 2003.
___________________International Journal of Peptide Research and Therapeutics
Submitted on: 01 September 2005.
Revised on: 19 December 2005.
Accepted on: 06 February 2006.
___________________International Journal of Peptide Research and Therapeutics
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