Hearing Loss

• Deutsches HörZentrum Hannover der HNO-Klinik der MHH — Hanover, Lower Saxony, Germany
• Universitätsklinikum Schleswig-Holstein - Campus Kiel, Klinik für Hals, Nasen-, Ohrenheilkunde, Kopf und Halschirurgie — Kiel, Schleswig-Holstein, Germany
• Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital — Zurich, Canton of Zurich, Switzerland

• Departement of Ambulatory Care and Community Medicine — Lausanne, Canton of Vaud, Switzerland

• Assiut university hospital — Asyut, Egypt

• Northwestern Memorial Hospital — Chicago, Illinois, United States
• The University of Chicago Medicine — Chicago, Illinois, United States

• University Medical Center St Radboud — Nijmegen, Netherlands

Not specified

Not specified

• Hôpital Nord — Marseille, Bouches-du-Rhône, France
• Hôpital Edouard Herriot — Lyon, Rhône, France
• CHU Lyon Sud — Pierre-Bénite, Rhône, France

• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

• Hoerzentrum Oldenburg — Oldenburg, Lower Saxony, Germany