1. Ken and Ruth Davee Department of Neurology and Simpson Querrey Center for Neurogenetics Northwestern University, Feinberg School of Medicine Chicago Illinois USA
2. Molecular Neurosciences, Developmental Neurosciences University College London Great Ormond Street Institute of Child Health London United Kingdom
3. Department of Neurology Great Ormond Street Hospital London United Kingdom
4. Department of Clinical and Movement Neurosciences University College London Queen Square Institute of Neurology, University College London London United Kingdom
5. Department of Neurosciences, Biomedicine and Movement Sciences University of Verona Verona Italy
6. Child Neurology Service, Clinical Hospital San Borja Arriarán Faculty of Medicine, University of Chile Santiago Chile
7. 1st Neurology Clinic, Eginition Hospital National and Kapodistrian University of Athens, Medical School Athens Greece
8. Parkinson's Disease and Movement Disorders Department HYGEIA Hospital Athens Greece
9. School of medicine European University of Cyprus Nicosia Cyprus