Rushton, Lesley Retrospective exposure assessment in environmental epidemiology. [electronic resource] - Occupational and environmental medicine Sep 2009 - 572-3 p. digital Publication Type: Comment; Journal Article ISSN: 1470-7926 Standard No.: 10.1136/oem.2008.044933 doi Subjects--Topical Terms: Acute DiseaseBenzene--adverse effectsChildEnvironmental Exposure--adverse effectsEnvironmental Monitoring--methodsEpidemiological MonitoringHumansLeukemia--epidemiology