Havelin, L. I., Espehaug, B., Vollset, S. E., & Engesaeter, L. B. (1994). Early failures among 14,009 cemented and 1,326 uncemented prostheses for primary coxarthrosis: The Norwegian Arthroplasty Register, 1987-1992. Acta Orthopaedica, 65(1), 1–6. https://doi.org/10.3109/17453679408993706