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Submitted on: 10 May 1999.
Revised on: 21 June 1999.
Accepted on: 15 July 1999.
___________________ARCHIVES OF PATHOLOGY & LABORATORY MEDICINE
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Submitted on: 27 June 2004.
Revised on: 13 August 2004.
Accepted on: 12 September 2004.
___________________ARCHIVES OF PATHOLOGY & LABORATORY MEDICINE
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