1. Division of Otolaryngology, Head and Neck Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
2. American Academy of Otolaryngology—Head and Neck Surgery Foundation, Alexandria, Virginia, USA
3. Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
4. Alex G. McKenna School of Business, Economics and Government, Saint Vincent College, Latrobe, Pennsylvania, USA