1. Department of Otolaryngology - Head and Neck Surgery; Washington University; Saint Louis Missouri
2. Department of Otolaryngology - Head and Neck Surgery; Medical University of South Carolina; Charleston South Carolina
3. Department of Otolaryngology - Head and Neck Surgery; Mayo Clinic; Rochester Minnesota
4. Department of Surgery; University of Auckland Faculty of Medicine; Auckland New Zealand
5. Head and Neck Surgery Center of Florida; Celebration Hospital; Celebration Florida