1. Department of Neurology Affiliated University of Buenos Aires Buenos Aires Argentina
2. Department of Neurology James J. Peters Veterans Affairs Medical Center Bronx NY USA
3. Department of NeurologyMount Sinai School of Medicine New York City NY USA
4. School of Medicine Instituto Universitario CEMIC Buenos Aires Argentina
5. Sanatorio IPENSA Buenos Aires Argentina
6. Movement Disorders and Neurophysiology Unit Department of Neuroscience AO Brotzu Cagliari Italy
7. Movement Disorders Unit and Center for Rare Neurological Disorders Department of Neurology Massachusetts General Hospital and Harvard Medical School Boston MA USA
8. Department of Neurology University Hospital Heidelberg Heidelberg Germany
9. Movement Disorders Clinic National Institute of Neurology and Neurosurgery Mexico City Mexico
10. Parkinson's Disease Center and Movement Disorders Clinic Department of Neurology Baylor College of Medicine Houston TX USA
11. Neurosciences Research Centre, Molecular and Clinical Sciences Research Institute St George's University of London London UK
12. Department of Clinical and Experimental Medicine University of Messina Messina Italy
13. Departments of Neurology, Human Genetics and Pediatrics Emory University Atlanta GA USA