1. Department of Orthopaedic Oncology, Careggi University Hospital, 50134 Firenze, Italy
2. Orthopaedic Clinic, Careggi University Hospital, 50134 Firenze, Italy
3. Department of Health Sciences, University of Florence, 50121 Florence, Italy
4. Department of Internal and Geriatric Medicine, Careggi University Hospital, 50134 Firenze, Italy
5. Department of Internal and Postoperative Medicine, Careggi University Hospital, 50134 Firenze, Italy