J Lapidus, L., Ponzer, S., Elvin, A., Levander, C., Lärfars, G., Rosfors, S., & De Bri, E. (2007). Prolonged thromboprophylaxis with Dalteparin during immobilization after ankle fracture surgery: A randomized placebo-controlled, double-blind study. Acta Orthopaedica, 78(4), 528–535. https://doi.org/10.1080/17453670710014185