1. Department of Vascular Surgery, Barnet General Hospital, Barnet, Hertfordshire, United Kingdom
2. Department of Trauma and Orthopedics, Barnet General Hospital, Barnet, Hertfordshire, United Kingdom
3. Sarcoma Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, United Kingdom
4. Department of Radiology, Barnet General Hospital, Barnet, United Kingdom