1. Department of Otolaryngology–Head and Neck Surgery, University of Iowa, Iowa City, IA
2. Department of Otorhinolaryngology-Head and Neck Surgery, Albert Einstein College of Medicine, Bronx, NY
3. Department of Orthopedic Surgery, University of Iowa, Iowa City, IA
4. Department of Otolaryngology–Head and Neck Surgery, Baylor College of Medicine and American Board of Otolaryngology, Houston, TX