1. Department of Orthopaedic Oncology, The Royal Orthopaedic Hospital, Birmingham, UK.
2. Department of Orthopaedic Surgery, Okayama University Hospital, Okayama, Japan.
3. Oncology Department, Instituto Nacional de Cancerología, Bogotá, Colombia.
4. Istituto Ortopedico Rizzoli/University of Bologna, Bologna, Italy.
5. Department of Musculoskeletal Pathology, The Royal Orthopaedic Hospital, Birmingham, UK.