%0 Journal Article %T Correction: The role of cumulative physical work load in symptomatic knee osteoarthritis ¨C a case¨Ccontrol study in Germany (Seidler et al. 2008). %A Seidler Andreas %A Bolm-Audorff Ulrich %A Abolmaali Nasreddin %A Elsner Gine %J Journal of Occupational Medicine and Toxicology %D 2012 %I BioMed Central %R 10.1186/1745-6673-7-21 %U http://www.occup-med.com/content/7/1/21