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Submitted on: 13 August 2012.
Revised on: 20 September 2012.
Accepted on: 07 October 2012.
___________________Clinical Trials---SAGE PUBLICATIONS LTD
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Submitted on: 04 September 2003.
Revised on: 03 October 2003.
Accepted on: 27 November 2003.
___________________Clinical Trials---SAGE PUBLICATIONS LTD
Submitted on: 21 January 2010.
Revised on: 06 March 2010.
Accepted on: 29 March 2010.
___________________Clinical Trials---SAGE PUBLICATIONS LTD
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