1. Department of Orthopaedic SurgeryNara Medical UniversityKashihara Nara Japan
2. First Department of OrthopaedicsNational and Kapodistrian University of Athens, School of MedicineAthens Greece
3. Department of Orthopaedic OncologyIRCCS Istituto Ortopedico RizzoliBologna Italy
4. Department of Orthopaedic SurgerySan Gerardo HospitalMonza Italy
5. Department of PathologyIRCCS Istituto Ortopedico RizzoliBologna Italy
6. Department of Public HealthHealth Management and Policy, Nara Medical UniversityKashihara Nara Japan