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Submitted on: 19 May 2004.
Revised on: 08 July 2004.
Accepted on: 21 August 2004.
___________________European Journal of Pharmacology
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Submitted on: 09 September 2005.
Revised on: 04 December 2005.
Accepted on: 02 January 2006.
___________________European Journal of Pharmacology
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Submitted on: 21 March 2012.
Revised on: 16 May 2012.
Accepted on: 14 June 2012.
___________________European Journal of Pharmacology
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