Andersen, Karen V, et al. “Local Infiltration Analgesia Is Not Improved by Postoperative Intra-Articular Bolus Injections for Pain After Total Hip Arthroplasty”. Acta Orthopaedica, vol. 86, no. 6, Nov. 2015, pp. 647-53, doi:10.3109/17453674.2015.1081340.