1. Department of Otolaryngology, University of Texas Southwestern Medical School, Dallas, TX
2. Department of Otolaryngology, Loyola University Medical Center, Chicago, IL
3. Departments of Otolaryngology-Head and Neck Surgery and Pediatrics, University of Chicago, Chicago, IL
4. Loyola University Medical Center, Maywood, IL
5. Northwestern University, Feinberg School of Medicine, Chicago, IL
6. Section of Otolaryngology-Head and Neck Surgery, University of Chicago, Chicago, IL
7. Division of Sino-nasal Disorders and Allergy, Associate Professor Department of Otolaryngology, University of Pittsburgh School of Medicine, Pittsburgh, PA
8. Otolaryngology-Head and Neck Surgery, Northwestern University, Chicago, IL
9. Boys Town Ear Nose and Throat Institute, Omaha, NE
10. Otolaryngology-Head and Neck Surgery, University of Utah, Salt Lake City, UT
11. SUNY Upstate Medical Center, Syracuse, NY