Submitted on: 04 May 2008.
Revised on: 13 August 2008.
Accepted on: 21 September 2008.
___________________CHEMICAL RESEARCH IN TOXICOLOGY
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Submitted on: 02 August 2001.
Revised on: 13 September 2001.
Accepted on: 09 November 2001.
___________________CHEMICAL RESEARCH IN TOXICOLOGY
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