The Hearing Cooperative Research Centre, Carlton, Victoria, Australia
Royal Victorian Eye and Ear Hospital, East Melbourne, Victoria, Australia
University of Michigan, Ann Arbor, Michigan, United States
Rocky Mountain Ear Center, Englewood, Colorado, United States
University of North Carolina, Chapel Hill, North Carolina, United States
University of Iowa, Des Moines, Iowa, United States
Universitätsklinikum Schleswig-Holstein - Campus Kiel, Kiel, Schleswig-Holstein, Germany
Ear, Nose and Throat Department, University of Freiburg, Freiburg, Baden-Württemberg, Germany
Ear, Nose and Throat Department, Universitätsklinikum Erlangen, Erlangen, Bavaria, Germany
Rocky Mountain Ear Center, Englewood, Colorado, United States
Greater Baltimore Medical Center, Baltimore, Maryland, United States
Pittsburgh Ear Associates, Pittsburgh, Pennsylvania, United States
CHU Lyon Sud, Pierre-Bénite, Rhône, France
Hôpital Edouard Herriot, Lyon, Rhône, France
Hôpital Nord, Marseille, Bouches-du-Rhône, France
Rocky Mountain Ear Center, Englewood, Colorado, United States
Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, United States
Center for Hearing and Balance, Chesterfield, Missouri, United States
Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Zurich, Kanton Zurich, Switzerland
Deutsches HörZentrum Hannover der HNO-Klinik der MHH, Hannover, Niedersachsen, Germany
Universitätsklinikum Schleswig-Holstein - Campus Kiel, Klinik für Hals, Nasen-, Ohrenheilkunde, Kopf und Halschirurgie, Kiel, Schleswig-Holstein, Germany
Hannover Medical School, Hannover, Niedersachsen, Germany