Hedstrom, M., Flordal, P.-A., Ahl, T., Svensson, J., & Dalen, N. (1996). Autologous blood transfusion in hip replacement: No effect on blood loss but less increase of plasminogen activator inhibitor in a randomized series of 80 patients. Acta Orthopaedica, 67(4), 317–320. https://doi.org/10.3109/17453679609002322