1. Department Otolaryngology–Head and Neck Surgery, University of Minnesota, Minneapolis, Minnesota, USA
2. Department Otolaryngology–Head and Neck Surgery, Indiana University, Indianapolis, Indiana, USA
3. Department Otolaryngology–Head and Neck Surgery, University of Michigan, Ann Arbor, Michigan, USA
4. Department Otolaryngology–Head and Neck Surgery, Dartmouth Medical Center, Manchester, New Hampshire, USA
5. Department Otorhinolaryngology–Head and Neck Surgery, Montefiore Medical Center, Albert Einstein College of Medicine, New York, New York, USA