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Submitted on: 23 June 1998.
Revised on: 06 August 1998.
Accepted on: 25 September 1998.
___________________Bangladesh Journal of Pharmacology
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Submitted on: 03 August 2022.
Revised on: 24 October 2022.
Accepted on: 18 December 2022.
___________________Bangladesh Journal of Pharmacology
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