1 Children's Neurosciences, Evelina London Children's Hospital at Guy's and St Thomas' NHS Foundation Trust, King's Health Partners Academic Health Science Centre, London, UK. Daniel.lumsden@gstt.nhs.uk.
2 Perinatal Imaging, School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK. Daniel.lumsden@gstt.nhs.uk.
3 Children's Neurosciences, Evelina London Children's Hospital at Guy's and St Thomas' NHS Foundation Trust, King's Health Partners Academic Health Science Centre, London, UK.
4 Department Women and Childrens Health, School of Life Course Sciences (SoLCS), Kings College London, London, UK.
5 Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, UK.