1. King’s Mill Hospital, Mansfield Road, Sutton-in-Ashfield, Nottingham-shire NG17 4JL, UK.
2. Winford Unit, Avon Orthopaedic Unit, Southmead Hospital, Bristol BS10 5NB, UK.
3. Princess Elizabeth Orthopaedic Centre, Barrack Road, Exeter EX2 5DW, UK.
4. King’s College Hospital, Denmark Hill, London SE5 9RS, UK.
5. Department of Trauma and Orthopaedic Surgery, Queen’s Medical Centre, University Hospital, Nottingham NG7 2UH, UK.