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Submitted on: 13 September 2004.
Revised on: 05 December 2004.
Accepted on: 29 December 2004.
___________________CLEVELAND CLINIC JOURNAL OF MEDICINE
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Submitted on: 06 July 2003.
Revised on: 31 July 2003.
Accepted on: 27 August 2003.
___________________CLEVELAND CLINIC JOURNAL OF MEDICINE
Submitted on: 10 June 2011.
Revised on: 08 August 2011.
Accepted on: 22 September 2011.
___________________CLEVELAND CLINIC JOURNAL OF MEDICINE