The Agent Orange Act of 1991 requested the Institute of Medicine (IOM) assess the strength of evidence for the association between exposure to military herbicides and the incidence of disease in veterans and the feasibility of conducting further epidemiological studies. The IOM recommended that the Department of Veterans Affairs develop historical reconstruction methods for characterizing exposure to herbicides in Vietnam.

Citations:

Stellman, et. al. “The extent and patterns of usage of Agent Orange and other herbicides in Vietnam.” Nature. 422, 681-687. 6 December 2002. Web. 8 May 2015.

Wilcox, Fred. Waiting for an Army to Die: The Tragedy of Agent Orange. Random House, 1983. Seven Stories Press. 1996.