K. V. Andersen, L. Nikolajsen, H. Daugaard, N. T. Andersen, V. Haraldsted, and K. Søballe, “Local infiltration analgesia is not improved by postoperative intra-articular bolus injections for pain after total hip arthroplasty”, ActaO, vol. 86, no. 6, pp. 647–653, Nov. 2015.