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Submitted on: 01 October 2005.
Revised on: 22 November 2005.
Accepted on: 15 December 2005.
___________________Cost Effectiveness and Resource Allocation
Submitted on: 16 June 1998.
Revised on: 29 August 1998.
Accepted on: 24 September 1998.
___________________Cost Effectiveness and Resource Allocation
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