Submitted on: 01 July 2007.
Revised on: 20 October 2007.
Accepted on: 10 November 2007.
___________________JOURNAL OF MEDICAL ETHICS---BMJ PUBLISHING GROUP
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Submitted on: 27 December 2019.
Revised on: 02 February 2020.
Accepted on: 16 March 2020.
___________________JOURNAL OF MEDICAL ETHICS---BMJ PUBLISHING GROUP
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