1. Department of Anaesthesia and Peri‐operative Medicine, West Suffolk NHS Foundation Trust Bury St Edmunds Suffolk UK
2. Department of Trauma and Orthopaedics East Sussex Healthcare NHS Trust Eastbourne Sussex UK
3. Honorary Clinical Professor, Brighton and Sussex Medical School Brighton UK
4. Nottingham Digestive Diseases Centre and National Institute for Health Research Nottingham Biomedical Research Centre Nottingham University Hospitals and University of Nottingham Nottingham UK
5. David Greenfield Metabolic Physiology Unit, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research School of Life Sciences, University of Nottingham, Queen's Medical Centre Nottingham UK