1. Department of Environmental Sciences, Connecticut Agricultural Experiment Station, New Haven, Connecticut 06511, United States
2. Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, Connecticut 06511, United States
3. Department of Environmental Health Sciences, School of Public Health, Yale University, New Haven, Connecticut 06510, United States
4. Upland Grassroots, Limestone, Maine 04750, United States
5. Center for Environmental and Human Toxicology & Department of Physiological Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32603, United States