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Submitted on: 21 December 1999.
Revised on: 09 January 2000.
Accepted on: 15 January 2000.
University of Toronto Medical Journal
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Submitted on: 29 March 2005.
Revised on: 05 April 2005.
Accepted on: 03 May 2005.
University of Toronto Medical Journal
Submitted on: 04 October 2002.
Revised on: 15 November 2002.
Accepted on: 08 December 2002.
University of Toronto Medical Journal
Submitted on: 06 January 2017.
Revised on: 28 January 2017.
Accepted on: 06 February 2017.
University of Toronto Medical Journal
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