1. Centre for Outcomes and Experience Research in Children's Health, Illness and Disability (ORCHID), Great Ormond Street Hospital for Children NHS Foundation Trust London UK
2. Department of Health Sciences University of Leicester Leicester UK
3. Yorkshire and Humber Infant and Children's Transport Service (Embrace) Barnsley UK
4. Clinical Operational Research Unit University College London UK
5. Children's Acute Transport Service Great Ormond Street Hospital for Children NHS Foundation Trust London UK
6. Respiratory, Critical Care and Anaesthesia Section, Infection, Immunity and Inflammation Research and Teaching Department UCL GOS Institute of Child Health London UK
7. Heart and Lung Directorate Great Ormond Street Hospital for Children NHS Foundation Trust London UK
8. Institute of Cardiovascular Science University College London UK