Vertigo

• Central California Clinical Research — Fresno, California, United States
• University of Colorado School of Medicine — Aurora, Colorado, United States
• Colorado ENT & Allergy — Colorado Springs, Colorado, United States
• Yale University School of Medicine — New Haven, Connecticut, United States

• Dizzy and Vertigo Institute of Los Angeles — Los Angeles, California, United States

• October 6 University — Giza, Egypt

• Department of Otolaryngology, Head & Neck Surgery and Audiology — Aalborg, North Denmark, Denmark

• University of Sao Paulo — São Paulo, Brazil

• Regional budgetary health care institution "Ivanovo Regional Clinical Hospital" — Saint Petersburg, Russia
• Limited Liability Company "Research Center Eco-Security" — Saint Petersburg, Russia
• Limited Liability Company "X7 Clinical Research" — Saint Petersburg, Russia
• Limited Liability Company "Research Center Eco-Safety" — Saint Petersburg, Russia

• Dent Neurologic Institute — Amherst, New York, United States

Not specified

• Haseki Sultangazi Training and Research Hospital — Istanbul, Sultangazi, Turkey (Türkiye)

• Inonu University — Malatya, Battalgazi/MALATYA, Turkey (Türkiye)