1. Foișor Orthopaedics Hospital Bucharest, Romania
2. University of Medicine and Pharmacy Carol Davila Bucharest, Bucuresti, Romania
3. IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
4. Dipartimento di Scienze Biomediche per la Salute, Universit’ degli Studi di Milano, Milan, Italy