1. Department of Medical Biotechnologies, University of Siena, Siena, Italy
2. Artrogruppo, Casa di Cura San Feliciano, Roma, Italy
3. Department of Health Sciences, Clinical Pharmacology and Oncology Section, University of Florence, Firenze, Italy
4. Reparto MIOA-MIOS, Ospedale S.M. Misericordia, Albenga, Italy
5. Department of Orthopaedics and Traumatology, Ospedale S. Giuseppe, Albano L., Rome, Italy
6. Department of Orthopaedic and Traumatology. S. Giovanni Bosco Hospital, ASL Napoli 1, Napoli, Italy
7. Istituto di Clinica delle Malattie Infettive, Università Cattolica S. Cuore, Roma, Italy