1. Department Paediatric Endocrinology and Diabetes, Bristol Royal Hospital for Children; University Hospitals Bristol NHS Foundation Trust; Bristol UK
2. Department Paediatric Endocrinology & Diabetes; St George's University Hospital NHS Foundation Trust; London UK
3. NIHR Clinical Research Network (West of England); Bristol UK
4. Child Adolescent Mental Health Service Children's Services (North); Bristol UK
5. Department Paediatric Endocrinology & Diabetes, Oxford University Hospitals NHS Foundation Trust; Oxford UK
6. National Joint Registry Office, Musculoskeletal Research Unit, University of Bristol School of Clinical Sciences; Bristol UK
7. NIHR Bristol Biomedical Research Unit in Nutrition; University of Bristol; Bristol UK