University of Copenhagen - Department of Paediatrics and Adolescent Medicine, University of Copenhagen - Department of Paediatrics and Adolescent Medicine, University College London - Great Ormond Street Institute of Child Health, University of Oslo - Oslo University Hospital, University of Copenhagen - Department of Paediatrics and Adolescent Medicine, Karolinska Institutet - Karolinska University Hospital, Karolinska Institutet - Karolinska University Hospital, Alder Hey Children's NHS Foundation Trust - Department of Paediatric Neurosurgery, Great Ormond Street Hospital, Great Ormond Street Hospital, St. Olavs University Hospital, University of Helsinki - Helsinki University Hospital, Lithuanian University of Health Sciences - Kaunas Clinical Hospital, Semmelweis University, Semmelweis University - 2nd Department of Pediatrics, Princess Máxima Center for Pediatric Oncology, Princess Maxima Center for Pediatric Oncology, University of Tübingen - University Hospitals Tübingen, University of Copenhagen - Department of Paediatrics and Adolescent Medicine, University of Copenhagen - Department of Pediatrics and Adolescent Medicine, University of Copenhagen - Department of Paediatrics and Adolescent Medicine, University of Copenhagen - Institute of Clinical Medicine, University Hospital Rigshospitalet - Department of Paediatrics and Adolescent Medicine and Independent

University of Bristol - Bristol Neonatal Neurology Group, University of Bristol - Neonatal Neuroscience, University of Bristol, University of Bristol, University of Bristol, University of Bristol, University of Warsaw - Faculty of Psychology, University of Bristol, University of Bristol, University of Bristol, Community Children's Health Partnership, University of Bristol, University of Bristol, Great Ormond Street Hospital, University Hospitals Bristol and University of Bristol