Lawrie, David, Martin Downing, G. Patrick Ashcroft, and Peter Gibson. 2003. “Insertion of Tantalum Beads in RSA of the HipVariations in Incidence of Extra-Osseous Beads With Insertion Site”. Acta Orthopaedica 74 (4):404-7. https://doi.org/10.1080/00016470310017695.