Robertsson, O., Dunbar, M. J., Knutson, K., & Lidgren, L. (2000). Past incidence and future demand for knee arthroplasty in Sweden: A report from the Swedish Knee Arthroplasty Register regarding the effect of past and future population changes on the number of arthroplasties performed. Acta Orthopaedica, 71(4), 376–380. https://doi.org/10.1080/000164700317393376