1. The Norwegian Arthroplasty Register, Department of Orthopedic Surgery, Haukeland University Hospital, Bergen, Norway
2. Faculty of Health Science, VID Specialized University, Oslo, Norway
3. Department of Population Health Sciences, Weill Medical College of Cornell University, New York, New York
4. Medical Device Surveillance and Assessment, Kaiser Permanente, San Diego, California
5. Center for Translational Oral Research, Department of Dentistry, University of Bergen, Bergen, Norway
6. Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
7. The Danish Knee Arthroplasty Register, Odense, Denmark
8. Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Odense, Denmark
9. Department of Clinical Epidemiology, Aarhus University Hospital and Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
10. The Swedish Arthroplasty Register, Gothenburg, Sweden
11. Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund, Sweden
12. Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
13. Centre of Registers Västra Götaland, Gothenburg, Sweden
14. The Dutch Arthroplasty Register, ‘s-Hertogenbosch, the Netherlands
15. Department Orthopaedics, Leiden University Medical Center, Leiden, the Netherlands
16. South Australian Health and Medical Research Institute, Adelaide, Australia
17. The Australian Orthopaedic Association National Joint Replacement Registry, Adelaide, Australia
18. Department of Medicine, Stavanger University Hospital, Stavanger, Norway
19. The Finnish Arthroplasty Register, Helsinki, Finland
20. Turku University Hospital and University of Turku, Turku, Finland
21. Department of Medical Physics, Turku University Hospital, Turku, Finland
22. The New Zealand Joint Registry, Christchurch, New Zealand
23. German Arthroplasty Registry, Berlin, Germany
24. Arthroplasty Registry of the Autonomous Province of Trento, Clinical Epidemiology Service, Provincial Agency for Health Services of Trento, Trento, Italy
25. Arthroplasty Register of Autonomous Province of Bolzano, Observatory of Health, Health Department AP of Bolzano, Bolzano, Italy
26. Romanian Arthroplasty Registry, Bucharest, Romania
27. University of Medicine and Pharmacy–Carol Davila, Bucharest, Romania
28. Foisor Orthopaedic Hospital, Bucharest, Romania
29. Economic Cybernetics and Statistics Doctoral School, Bucharest University of Economic Studies, Bucharest, Romania
30. Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway
31. Swiss National Hip and Knee Joint Registry, Bern, Switzerland
32. Institute of Social and Preventive Medicine, SwissRDL, University of Bern, Bern, Switzerland
33. Articon, Bern, Switzerland
34. The National Joint Registry for England, Wales, Northern Ireland, The Isle of Man and Guernsey, London, United Kingdom
35. NEC Software Solutions, Hemel Hempstead, United Kingdom
36. Division of Clinical Medicine, School of Medicine and Population Health, University of Sheffield, Sheffield, United Kingdom