1. Department of Family and Community Medicine, College of Medicine, University of Cincinnati, Cincinnati, Ohio.
2. Department of Otolaryngology Head and Neck Surgery, College of Medicine, University of Cincinnati, Cincinnati, Ohio.
3. Department of Communication Sciences and Disorders, College of Allied Health, University of Cincinnati, Cincinnati, Ohio.
4. Department of Otorhinolaryngolgy, Mayo Clinic Hospital, Phoenix, Arizona.
5. Department of Communication Sciences and Disorders, Georgia Southern University, Savannah, Georgia.
6. Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.