1. Division of Otorhinolaryngology, Faculty of Health SciencesUniversity of Cape Town South Africa
2. Department of Head and Neck Surgery, University of Texas MDAnderson Cancer CenterHouston Texas
3. Department of Surgery, College of Health SciencesUniversity of NairobiNairobi Kenya
4. Department of Head and Neck SurgeryVanderbilt Bill Wilkerson CenterNashville Tennessee
5. Department of Otolaryngology – Head and Neck SurgeryJohns Hopkins Head and Neck Cancer CenterBaltimore Maryland