1. Boonshoft School of Medicine Wright State University Dayton Ohio USA
2. Department of Otolaryngology University of Colorado Anschutz Medical Campuus Parker Colorado USA
3. Department of Otolaryngology, Head and Neck Surgery University of Minnesota Minneapolis Minnesota USA
4. Department of Otolaryngology, Head and Neck Surgery Louisiana State University Health Sciences Center, Our Lady of the Lake Children's Hospital Baton Rouge Louisiana USA
5. Oschner Health New Orleans Louisiana USA