1. Rhinology, Sinus & Skull Base, Kentuckiana Ear, Nose & Throat Louisville Kentucky U.S.A.
2. Department of Otolaryngology–Head and Neck Surgery University of Louisville Louisville Kentucky U.S.A.
3. Section of Rhinology, Sinus and Skull Base Surgery, Head & Neck Institute, Cleveland Clinic Foundation Cleveland Ohio U.S.A.
4. Department of Otolaryngology–Head & Neck Surgery, Cedars Sinai Medical Center Los Angeles California U.S.A.
5. Department of Otolaryngology–Head & Neck Surgery Indiana University School of Medicine Indianapolis Indiana U.S.A.