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Submitted on: 04 July 2011.
Revised on: 10 August 2011.
Accepted on: 24 September 2011.
___________________International Journal of Nursing Sciences
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Submitted on: 24 June 2006.
Revised on: 29 September 2006.
Accepted on: 19 November 2006.
___________________International Journal of Nursing Sciences
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