%0 Journal Article %A A J van der Beek %T Psychoactive substance use in truck drivers: occupational health and public health %D 2014 %R 10.1136/oemed-2013-101791 %J Occupational and Environmental Medicine %P 1-1 %V 71 %N 1 %U https://oem.bmj.com/content/oemed/71/1/1.full.pdf