1. Department of Orthopedic, Traumatology and Paediatric Orthopaedic Oncology, Azienda Ospedaliero Universitaria IRCCS, Meyer Children Hospital, 50139 Florence, Italy
2. Department of Orthopaedic Oncology, Aster MIMS, Calicut 673016, India
3. Department of Orthopedic Oncology and Reconstructive Microsurgery, CTO, 10100 Florence, Italy
4. Orthoplastic Surgery Division, Istituto Ortopedico Rizzoli, 40136 Bologna, Italy