%0 Journal Article %A Kyle Steenland %T Marginal structural models to control for time-varying confounding in occupational and environmental epidemiology %D 2013 %R 10.1136/oemed-2013-101629 %J Occupational and Environmental Medicine %P 601-602 %V 70 %N 9 %U https://oem.bmj.com/content/oemed/70/9/601.full.pdf