1. Department of Environmental Toxicology, Clemson University, Pendleton, South Carolina, USA
2. International Joint Commission, Great Lakes Regional Office, Windsor, Ontario, Canada
3. US Fish and Wildlife Service, East Lansing Field Office, Lansing, Michigan, USA,
4. Department of Small Animal Clinical Sciences, Michigan State University, East Lansing, Michiga, USA
5. Great Lakes and Environmental Assessment Section, Surface Water Quality Division, Michigan Department of Environmental Quality, Lansing, Michigan, USA,