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Submitted on: 17 May 2008.
Revised on: 17 August 2008.
Accepted on: 28 September 2008.
___________________JOURNAL OF PAIN AND SYMPTOM MANAGEMENT
Submitted on: 09 October 2001.
Revised on: 05 November 2001.
Accepted on: 17 December 2001.
___________________JOURNAL OF PAIN AND SYMPTOM MANAGEMENT
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