Submitted on: 21 August 2002.
Revised on: 16 October 2002.
Accepted on: 26 October 2002.
___________________Annals of Clinical and Translational Neurology
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Submitted on: 18 September 2006.
Revised on: 10 January 2007.
Accepted on: 26 February 2007.
___________________Annals of Clinical and Translational Neurology
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