1. Bobby R. Alford Department of Otolaryngology Head and Neck Surgery, Baylor College of Medicine, Houston, Texas, USA
2. Speech and Language Pathology, Department of Veterans Affairs, Michael E. DeBakey VA Medical Center, Houston, Texas, USA
3. Houston VA Health Services Research and Development Center, Department of Veterans Affairs, Michael E. DeBakey VA Medical Center, Houston, Texas, USA
4. Otolaryngology Head and Neck Surgery Service, Department of Veterans Affairs, Michael E. DeBakey VA Medical Center, Houston, Texas, USA
5. Department of Otolaryngology Head and Neck Surgery, Washington University, St. Louis, Missouri, USA