1. Department of Surgical Sciences (DISC), University of Genoa, Genova, Italy
2. Clinica Ortopedica e Traumatologica, Ospedale Policlinico San Martino, Genova, Italy
3. Istituto Ortopedico Galeazzi IRCCS Chirurgia articolare sostitutiva e chirurgia ortopedica, Milano, Italy