1. West of Scotland Orthopaedic Training Scheme, Glasgow Royal Infirmary, 84 Castle Street, Glasgow G4 0SF, UK.
2. Department of Orthopaedic Surgery, Royal Hospital for Sick Children, Yorkhill, Glasgow G3 8SJ, UK.
3. Sheffield Children’s Hospital, Western Bank, Sheffield SH102TH, UK.
4. Bristol Royal Hospital for Sick Children, St. Michael’s Hill, Bristol BS2 8BJ, UK.