Andersen, Karen V, Marie Bak, Birgitte V Christensen, Jørgen Harazuk, Niels A Pedersen, and Kjeld Søballe. 2010. “A Randomized, Controlled Trial Comparing Local Infiltration Analgesia With Epidural Infusion for Total Knee Arthroplasty”. Acta Orthopaedica 81 (5):606-10. https://doi.org/10.3109/17453674.2010.519165.