1 Department of Environmental Science, Center for Reservoir and Aquatic Systems Research, Institute of Biomedical Studies, Baylor University, Waco, Texas, USA.
2 Office of Research and Development, US Environmental Protection Agency, Cincinnati, Ohio, USA.
3 Southern California Coastal Water Research Project, Costa Mesa, California, USA.
4 Natural Resources Conservation Service, US Department of Agriculture, Temple, Texas, USA.
5 Center for Coastal Environmental Health and Biomolecular Research, National Centers for Coastal Ocean Science, National Oceanic and Atmospheric Administration, Charleston, South Carolina, USA.
6 Wisconsin State Laboratory of Hygiene, University of Wisconsin-Madison, Madison, Wisconsin, USA.
7 Natural Resources Research Institute, University of Minnesota Duluth, Duluth, Minnesota, USA.
8 Department of Environmental Health Science, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA.
9 Beagle Bioproducts, Columbus, Ohio, USA, Yellow Springs Instruments, A Xylem Company, Yellow Springs, Ohio, USA.