1. Department of Otolaryngology – Head and Neck Surgery, Medical University of South Carolina, Charleston, South Carolina, USA.
2. Department of Otolaryngology – Head and Neck Surgery, Medical College of Wisconsin, Milwaukee, WI.
3. Department of Speech and Language Pathology, Medical University of South Carolina, Charleston, South Carolina, USA.
4. Department of Otolaryngology – Head and Neck Surgery, Louisiana State University, Baton Rouge, Louisiana, USA.
5. Department of Otolaryngology – Head and Neck Surgery, University of Virginia, Charlottesville, Virginia, USA.