1. Orthopaedic Research Laboratory, Department of Orthopaedic Surgery and Traumatology Odense University Hospital Odense Denmark
2. Department of Clinical Research University of Southern Denmark Odense Denmark
3. Department of Surgery and of Biomedicine University Hospital Basel Basel Switzerland
4. Fin‐Ceramica Faenza S.p.A. Faenza RA Italy
5. Department of Pathology Odense University Hospital Odense Denmark
6. Department of Orthopaedic Surgery & Traumatology Copenhagen University Hospital, Bispebjerg Copenhagen Denmark
7. Department of Clinical Medicine University of Copenhagen Copenhagen Denmark