Individual and occupational risk factors for knee osteoarthritis: results of a case-control study in Germany.
Klussmann A, Gebhardt H, Nübling M, Liebers F, Quirós Perea E, Cordier W, von Engelhardt LV, Schubert M, Dávid A, Bouillon B, et al. Arthritis Res Ther. 2010; 12(3):R88. Epub 2010 May 14.