1. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford, UK
2. Department, Paediatric Orthopaedic Physiotherapy Service, Chesterfield Royal Hospital NHS Foundation Trust, Chesterfield, UK
3. Department of Paediatric Orthopaedic Service, St George’s University Hospitals NHS Foundation Trust, London, UK
4. Department of Orthopaedics, Sheffield Children’s NHS Foundation Trust, Sheffield, UK
5. Department of Paediatric Orthopaedic, Oxford University Hospitals NHS Foundation Trust, Oxford, UK