1. Departments of Neurology and Pediatrics; University of Pennsylvania and the Children's Hospital of Philadelphia; Philadelphia Pennsylvania
2. Université Libre de Bruxelles; Brussells Belgium
3. Department of Neurology and JARA Brain; University Hospital; RWTH Aachen Germany
4. University of California; Los Angeles California USA
5. Murdoch Children's Research Institute; Melbourne Australia
6. Indiana University; Indianapolis Indiana USA
7. Department of Pediatrics; Division of Cardiology; University of Pennsylvania; the Children's Hospital of Philadelphia; Philadelphia Pennsylvania USA
8. National Institute of Neurological Disorders and Stroke; National Institutes of Health; Bethesda Maryland USA
9. Friedreich's Ataxia Research Alliance; Downingtown Pennsylvania USA
10. Hospital for Sick Children; Toronto Ontario Canada
11. The Ohio State University; Columbus Ohio USA
12. KAI Research, Inc.; Rockville Maryland USA