Submitted on: 18 November 2006.
Revised on: 08 March 2007.
Accepted on: 23 April 2007.
___________________CIRCULATION RESEARCH---LIPPINCOTT WILLIAMS & WILKINS
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Submitted on: 01 March 2015.
Revised on: 06 April 2015.
Accepted on: 10 May 2015.
___________________CIRCULATION RESEARCH---LIPPINCOTT WILLIAMS & WILKINS
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Submitted on: 10 March 2009.
Revised on: 06 June 2009.
Accepted on: 21 June 2009.
___________________CIRCULATION RESEARCH---LIPPINCOTT WILLIAMS & WILKINS
Submitted on: 31 August 2012.
Revised on: 06 October 2012.
Accepted on: 08 November 2012.
___________________CIRCULATION RESEARCH---LIPPINCOTT WILLIAMS & WILKINS