1. Houston, Texas, Durham, North Carolina, Milwaukee, Wisconsin, Seattle, Washington, and Alexandria, Virginia
2. Department of Otorhinolaryngology and Communicative Sciences, Baylor College of Medicine
3. Division of Otolaryngology–Head and Neck Surgery, Department of Surgery, Duke University School of Medicine
4. Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin
5. Department of Otolaryngology–Head and Neck Surgery (EMW, BY), University of Washington School of Medicine and the Surgery and Perioperative Care and Health Services Research and Development Services
6. VA Puget Sound Health Care System, Seattle, WA, and the American Academy of Otolaryngology–Head and Neck Surgery Foundation.