Hearing Loss, Age-Related

• One Cross Medical Clinic — Campbellsville, Kentucky, United States
• United Clinics of Kentuck — Campton, Kentucky, United States
• Blount Rural Health Center — Elkton, Kentucky, United States
• North Fork Valley Community Health — Hazard, Kentucky, United States

• Brain and Creativity Institute, University of Southern California — Los Angeles, California, United States
• Flinders University — Adelaide, South Australia, Australia
• Memorial University of Newfoundland — St. John's, Newfoundland and Labrador, Canada
• Toronto Metropolitan University — Toronto, Ontario, Canada

Not specified

• Johns Hopkins Bayview Medical Center — Baltimore, Maryland, United States

• Aalto University — Espoo, Finland
• HUS Head and Neck Center — Helsinki, Finland

• University of Pittsburgh — Pittsburgh, Pennsylvania, United States

• Rotman Research Institute at Baycrest Centre — Toronto, Ontario, Canada

• Ospedale Guglielmo da Saliceto- ENT Department — Piacenza, PC, Italy

• Auditory Rehabilitation and Clinical Trials Laboratory at the University of South Florida — Tampa, Florida, United States