Submitted on: 12 December 2002.
Revised on: 17 March 2003.
Accepted on: 11 May 2003.
___________________COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
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Submitted on: 05 January 2003.
Revised on: 28 March 2003.
Accepted on: 09 April 2003.
___________________COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY