1. Veterans Affairs (VA) Rehabilitation Research & Development (RR&D) National Center for Rehabilitative Auditory Research (NCRAR), VA Portland Health Care System, OR
2. OHSU-PSU School of Public Health, Oregon Health & Science University, Portland
3. Department of Otolaryngology-Head and Neck Surgery, Oregon Health & Science University, Portland
4. Department of Defense, Hearing Center of Excellence (HCE), San Antonio, TX