Medicine. A method of estimating the amount of people's past exposure to hazardous substances. Computer and approximation methods are used when past information is limited, not available, or missing
Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention, Glossary of Terms, Atlanta, GA, USA 2009. http://www.atsdr.cdc.gov/glossary.html, (Tox - Amer) {788}