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The above articles, published online December 31, 2008 and in the January 2009 issue of The Laryngoscope, have been retracted by agreement between the authors, the Journal Editor-in-Chief, Jonas Johnson, and John Wiley & Sons, Inc. These retractions have been agreed as the articles were erroneously published twice; first in The Laryngoscope, volume 118 issue 12, and again in volume 119 issue 1. John Wiley & Sons, Inc. acknowledges responsibility for this error, which was in no way the fault of the authors.