Falch, Jan A., Arnfinn Ilebekk, and Ulf Slungaard. “Epidemiology of Hip Fractures in Norway”. Acta Orthopaedica 56, no. 1 (January 1, 1985): 12–16. Accessed May 15, 2026. https://actaorthop.org/actao/article/view/23184.