1. Genetic Medicine, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK
2. St Mary's Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
3. Children's National Medical Center, Department of Neurology, Washington DC, USA
4. Child Neurology and Psychiatry Unit, C. Mondino National Institute of Neurology Foundation, IRCCS, Pavia, Italy
5. Department of Experimental Immunology, Academic Medical Centre, University of Amsterdam (UvA), Amsterdam, the Netherlands