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Submitted on: 14 March 2009.
Revised on: 27 May 2009.
Accepted on: 05 July 2009.
___________________Journal of Nursing Management---WILEY-HINDAWI
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Submitted on: 21 February 2007.
Revised on: 10 May 2007.
Accepted on: 02 June 2007.
___________________Journal of Nursing Management---WILEY-HINDAWI