Submitted on: 04 May 2010.
Revised on: 13 August 2010.
Accepted on: 18 September 2010.
___________________BMC Medical Ethics---BMC
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Submitted on: 06 April 2007.
Revised on: 10 July 2007.
Accepted on: 30 August 2007.
___________________BMC Medical Ethics---BMC
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Submitted on: 20 November 1999.
Revised on: 12 January 2000.
Accepted on: 02 March 2000.
___________________BMC Medical Ethics---BMC
Submitted on: 10 May 2000.
Revised on: 05 August 2000.
Accepted on: 08 September 2000.
___________________BMC Medical Ethics---BMC
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Submitted on: 20 August 2009.
Revised on: 29 November 2009.
Accepted on: 17 January 2010.
___________________BMC Medical Ethics---BMC
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