1. Department of Orthopaedics and Traumatology, Helsinki University Hospital, Helsinki, Finland.
2. Unit of Oncology, Royal Orthopaedic Hospital, Birmingham, UK; Honorary Senior Lecturer, Aston University Medical School, Birmingham, UK.
3. Unit of Oncology, Royal Orthopaedic Hospital, Birmingham, UK; Centre Hospitalier Régional Universitaire (CHU) de Tours, Tours, France.
4. Unit of Oncology, Royal Orthopaedic Hospital, Birmingham, UK.