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Submitted on: 25 July 2008.
Revised on: 10 September 2008.
Accepted on: 20 October 2008.
___________________Journal of Pharmacological Sciences
Submitted on: 15 November 2004.
Revised on: 09 December 2004.
Accepted on: 07 January 2005.
___________________Journal of Pharmacological Sciences
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Submitted on: 27 September 2007.
Revised on: 24 January 2008.
Accepted on: 05 March 2008.
___________________Journal of Pharmacological Sciences
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