Markar SR, Jones GG, Karthikesalingam A, Segaren N, Patel RV. Knee Surg Sports Traumatol Arthrosc. 2012 Sep;20(9):1766-72. doi: 10.1007/s00167-011-1761-0. Epub 2011 Nov 10.
Department of Trauma and Orthopaedic Surgery, University College London Hospitals NHS Foundation Trust, 235 Euston Road, London NW1 2BU, Reino Unido.