Hearing Disorders

• Silverstein Institute — Sarasota, Florida, United States
• Otolaryngology Associates — Indianapolis, Indiana, United States
• New York Eye and Ear Infirmary — New York, United States
• Northwest Ear Institute — Portland, Oregon, United States

• Barkley Memorial Center — Lincoln, Nebraska, United States

• New York Eye and Ear Infirmary of Mount Sinai — New York, United States
• New York University Physical Therapy Department — New York, United States

• University of Iowa — Iowa City, Iowa, United States
• University of Iowa — Iowa City, Iowa, United States

• St. James's Wellness Trust Clinical Research Facility — Dublin, Ireland

• University Hospital Regensburg — Regensburg, Germany
• St. James's Wellness Trust Clinical Research Facility — Dublin, Ireland

Not specified

• University of Pittsburgh — Pittsburgh, Pennsylvania, United States

• Stavanger kommune — Stavanger, Rogaland, Norway

• St Mary's Hospital — London, United Kingdom