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Submitted on: 12 November 2011.
Revised on: 16 January 2012.
Accepted on: 02 March 2012.
___________________AAPS PHARMSCITECH---SPRINGER
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Submitted on: 20 August 2008.
Revised on: 13 December 2008.
Accepted on: 19 January 2009.
___________________AAPS PHARMSCITECH---SPRINGER
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Submitted on: 06 November 1999.
Revised on: 31 January 2000.
Accepted on: 17 March 2000.
___________________AAPS PHARMSCITECH---SPRINGER
Submitted on: 25 August 2004.
Revised on: 09 December 2004.
Accepted on: 15 January 2005.
___________________AAPS PHARMSCITECH---SPRINGER
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