Concentrations of Dialkyl Phosphate Metabolites of Organophosphorus Pesticides in the U.S. Population. - Barr, Dana B.; Bravo, Roberto; Weerasekera, Gayanga; Caltabiano, Lisa M.; Whitehead Jr., Ralph D.; Olsson, Anders O.; Caudill, Samuel P.; Schober, Susan E.; Pirkle, James L.; Sampson, Eric J.; Jackson, Richard J.; Needham, Larry L. (Environmental Health Perspectives, 2004)