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Submitted on: 30 September 2000.
Revised on: 20 November 2000.
Accepted on: 07 January 2001.
___________________Biomedical Research and Therapy
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Submitted on: 19 August 2012.
Revised on: 22 November 2012.
Accepted on: 17 December 2012.
___________________Biomedical Research and Therapy
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