Submitted on: 28 February 1998.
Revised on: 16 April 1998.
Accepted on: 26 April 1998.
___________________JOURNAL OF PEPTIDE SCIENCE---WILEY
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Submitted on: 01 September 2006.
Revised on: 01 December 2006.
Accepted on: 02 January 2007.
___________________JOURNAL OF PEPTIDE SCIENCE---WILEY
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Submitted on: 21 June 2007.
Revised on: 19 October 2007.
Accepted on: 02 November 2007.
___________________JOURNAL OF PEPTIDE SCIENCE---WILEY