1. Ataxia Service Department of Clinical and Movement Neurosciences and Department of Neurogenetics The National Hospital for Neurology and Neurosurgery and UCL Queen Square Institute of Neurology Faculty of Brain Sciences University College London London United Kingdom
2. Neurology Department Child Development Centre Coimbra’s Hospital and University Centre Coimbra Portugal
3. Department of Uro‐Neurology The National Hospital for Neurology and Neurosurgery, and UCL Queen Square Institute of Neurology Faculty of Brain Sciences University College London London United Kingdom
4. Envida Maastricht The Netherlands
5. Department of Neurology School of Medicine International University of Health and Welfare/International University of Health and Welfare Ichikawa and Narita Hospital Chiba Japan
6. Department of Neurosurgery National Neuroscience Institute Singapore Singapore