Published on in Vol 24, No 5 (2022): May
1 Centre for Health Services Research, School of Health Sciences, City, University of London, London, United Kingdom
2 East London NHS Foundation Trust, London, United Kingdom
3 Brighton and Sussex University Hospitals NHS Trust, Brighton, United Kingdom
4 University College London Great Ormond Street Institute of Child Health, University College London, London, United Kingdom
5 Centre for Adolescent Rheumatology Versus Arthritis, London, United Kingdom
6 National Institute for Health Research Biomedical Research Centre at Great Ormond Street Hospital, London, United Kingdom
7 See Acknowledgments, London, United Kingdom
*these authors contributed equally