1. 1Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
2. 2IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
3. 5Fondazione Livio Sciutto Onlus, Campus Savona – Università degli Studi di Genova, Savona, Italy
4. 3Landelijke Registratie Orthopedische Implantaten (Dutch Arthroplasty Register), ’s Hertogenbosch, The Netherlands
5. 4Department of Orthopaedics, Leiden University Medical Center, Leiden, The Netherlands