Friedreich's Ataxia

• Northwestern Medical Group, Department of Neurology — Chicago, Illinois, United States
• Clinilabs — Eatontown, New Jersey, United States
• University of Texas Southwestern Medical Center — Dallas, Texas, United States

• University of Florida — Gainesville, Florida, United States

• Weill Cornell Medicine — New York, United States

• IRCCS Eugenio Medea / Associazione la Nostra Famiglia — Conegliano, Treviso, Italy

• University of California Los Angeles — Los Angeles, California, United States
• University of South Florida — Tampa, Florida, United States
• University of Iowa — Iowa City, Iowa, United States
• Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States

Not specified

• The Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States

• Medical University Innsbruck, Department of Neurology — Innsbruck, Austria
• Université Libre de Bruxelles, Hôpital Erasme, Dpt of Neurology — Brussels, Belgium
• Motol University Hospital, Centre for Hereditary Ataxias — Prague, Czechia
• Hôpital Pitié Salpêtrière, Bâtiment ICM — Paris, France

• University of California, Los Angeles Neurology Clinic — Los Angeles, California, United States
• University of Florida - Clinical Research Center — Gainesville, Florida, United States
• University of Iowa Children's Hospital — Iowa City, Iowa, United States
• Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States

• University of California, Los Angeles Neurology Clinic — Los Angeles, California, United States
• University of Florida - Clinical Research Center — Gainesville, Florida, United States
• University of Iowa Children's Hospital — Iowa City, Iowa, United States
• Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States