1. Royal Orthopaedic Hospital, Birmingham, UK
2. Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway
3. Homi Bhabha National Institute, Tata Memorial Hospital, Mumbai, India
4. Department of Orthopedics and Orthopedic Oncology, University of Padova, Padova, Italy
5. Department of Orthopaedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
6. Royal Prince Alfred Hospital, Sydney, Australia
7. Orthopedic Surgery Department, Cairo University, Cairo, Egypt
8. Pontificia Universidad Catolica de Chile, Santiago, Chile
9. Department of Orthopaedics and Traumatology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland