1. Department of Veterans Affairs, Audiology and Speech Pathology Service, Bay Pines VA Health Care System, FL
2. Department of Veterans Affairs, VA Portland Health Care System, VA National Center for Rehabilitative Auditory Research, OR
3. Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland
4. Department of Defense Hearing Center of Excellence, San Antonio, TX
5. Department of Otolaryngology/Head and Neck Surgery, Oregon Health & Science University, Portland