Christiansen Cory G, Kassim Rida A, Callaghan John J, Marsh J Lawrence, Schmidt Andrew H
Department of Orthopaedic Surgery, University of Iowa Hospitals Health Care, Iowa City, 52242-1088, USA.
J Bone Joint Surg Am. 2003 Sep;85(9):1819-22. doi: 10.2106/00004623-200309000-00027.