1. Aerodigestive Research Core Laboratory, University of Florida, Gainesville
2. Department of Speech, Language, and Hearing Sciences, University of Florida, Gainesville
3. Breathing Research and Therapeutics Center, University of Florida, Gainesville
4. Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN
5. Department of Health Sciences, School of Health Professions, University of Texas Health Science Center, San Antonio
6. Department of Speech Pathology and Audiology, College of Allied Health Professions, University of South Alabama, Mobile