1. Department of Orthopaedic Surgery Nara Medical University Nara Japan
2. Department of Orthopaedic Oncology IRCCS Istituto Ortopedico Rizzoli Bologna Italy
3. Department of Orthopedic Surgery Nagoya City University Nagoya Japan
4. First Department of Orthopaedics, School of Medicine National and Kapodistrian University of Athens Athens Greece
5. Department of Rehabilitation Medicine Nara Medical University Nara Japan