Department of Nutrition, University of North Carolina, Chapel Hill, North Carolina 27599, Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3 Canada, Microbiological and Chemical Exposure Branch, Assessment Research Division, National Exposure Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio 45268, Pharmacokinetics Branch... (At 2009-08-20)