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
10. US Geological Survey; Columbia Missouri USA