Affiliations

• ¹ Medical School, Newcastle University, Newcastle upon Tyne, UK j.simpson@newcastle.ac.uk.
• ² Newcastle upon Tyne NHS Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
• ³ Southampton Children's Hospital, Southampton, UK.
• ⁴ Royal Brompton Hospital, Guys and St Thomas' NHS Foundation Trust, London, UK.
• ⁵ National Hospital for Neurology and Neurosurgery, University College London NHS Foundation Trust, London, UK.
• ⁶ Therapies, Tees, Esk and Wear Valleys NHS Foundation Trust, Darlington, UK.
• ⁷ Teesside University, Middlesbrough, UK.
• ⁸ University of Central Lancashire, Preston, UK.
• ⁹ St Oswald's Hospice, Newcastle upon Tyne, UK.
• ¹⁰ Medical School, Newcastle University, Newcastle upon Tyne, UK.
• ¹¹ South Tees Hospitals NHS Foundation Trust, Middlesbrough, UK.
• ¹² Noah's Ark Children's Hospital for Wales, Cardiff, UK.
• ¹³ Cardiff University, Cardiff, UK.
• ¹⁴ Queen's University Belfast, Belfast, UK.
• ¹⁵ Belfast Health and Social Care Trust, Belfast, UK.
• ¹⁶ University of Edinburgh, Edinburgh, UK.
• ¹⁷ Royal Infirmary of Edinburgh, Edinburgh, UK.
• ¹⁸ Naomi House & Jacksplace Hospices for Children and Young Adults, Winchester, UK.
• ¹⁹ NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Trust & University of Southampton, Southampton, UK.