References
- Havelin L I, Engesaeter L B, Espehaug B, Furnes O, Lie S A, Vollset S E. The Norwegian Arthroplasty Register. 11 years and 73,000 arthroplasties. Acta Orthop Scand 2000; 71(4)337–353
- Malchau H, Herberts P, Eisler T, Garellick G, Söderman P. The Swedish total hip replacement register. J Bone Joint Surg Am 2002; 84(2)2–20