Jacobsen, S., Sonne-Holm, S., Søballe, K., Gebuhr, P., & Lund, B. (2004). Radiographic case definitions and prevalence of osteoarthrosis of the hipA survey of 4 151 subjects in the Osteoarthritis Substudy of the Copenhagen City Heart Study. Acta Orthopaedica, 75(6), 713–720. https://doi.org/10.1080/00016470410004085