1. Department of Otolaryngology—Head and Neck Surgery The Ohio State University Wexner Medical Center Columbus Ohio U.S.A.
2. College of Medicine The Ohio State University Columbus Ohio U.S.A.
3. Department of Otolaryngology—Head and Neck Surgery Nationwide Children's Hospital Columbus Ohio U.S.A.
4. Department of Speech Pathology Nationwide Children's Hospital Columbus Ohio U.S.A.