1. Department of Otolaryngology‐Head and Neck Surgery The Pennsylvania State University College of Medicine Hershey Pennsylvania USA
2. Department of Otolaryngology University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
3. Department of Otolaryngology, Max Rady College of Medicine University of Manitoba Winnipeg Canada
4. Department of Otolaryngology University of Minnesota Minneapolis Minnesota USA
5. Department of Public Health Sciences, Division of Biostatistics and Bioinformatics The Pennsylvania State University College of Medicine Hershey Pennsylvania USA
6. Department of Radiation Oncology The Pennsylvania State University College of Medicine Hershey Pennsylvania USA
7. Department of Otolaryngology‐Head and Neck Surgery Henry Ford Medical Center Detroit Michigan USA