This presentation will be available to view as a discussion poster at the 7th International Conference on the Science of Exposure Assessment - X2012. It will be presented on 03 July 2012 from 13.45 – 15.45 followed by a chaired discussion of all posters in this session on Health Effects and Biological Monitoring. Appointments with the authors are available to book at https://x2012discussionposters.acuityscheduling.com