1. University College London Hospitals NHS Foundation Trust, London, UK
2. Social Sciences Research Unit, Institute of Education, University of London, London, UK
3. London School of Hygiene and Tropical Medicine, London, UK
4. UCL School of Pharmacy, University of London, London, UK
5. Diabetes UK, London, UK
6. Royal Liverpool Children’s Hospital NHS Trust, Liverpool, UK
7. General Adolescent and Paediatric Unit, Institute of Child Health, University College London, London, UK