Koskinen, E. et al. 2008. Comparison of survival and cost‐effectiveness between unicondylar arthroplasty and total knee arthroplasty in patients with primary osteoarthritis: A follow‐up study of 50,493 knee replacements from the Finnish Arthroplasty Register. Acta Orthopaedica. 79, 4 (Jan. 2008), 499–507. DOI:https://doi.org/10.1080/17453670710015490.