1. Department of Orthopaedic Surgery, Sint Maartenskliniek, Nijmegen;
2. Foundation for Orthopaedic Research, Care and Education, Amphia Hospital, Breda;
3. Dutch Arthroplasty Register, Landelijke Registratie Orthopedische Implantaten (LROI), ‘s Hertogenbosch;
4. Department of Orthopaedic Surgery, Amphia Hospital, Breda, The Netherlands