1. Department of Orthopedics and Traumatology, AO CTO Hospital, Turin, Italy
2. c/o AO CTO/M. Adelaide, Via Zuretti 29, 10126 Torino, Italy
3. University of the Studies of Turin, Turin, Italy
4. Materials Science and Chemical Engineering Department, Polytechnic of Turin, C.so Duca degli Abruzzi, 24-10129 Turin, Italy
5. Department of Clinical and Biological Sciences, c/o S. Luigi Hospital, Regione Gonzole, 10-10043 Orbassano, Italy