1. Office of Research and Development, National Health and Environmental Effects Research Laboratory, Mid-Continent Ecology Division, US Environmental Protection Agency, 6201 Congdon Blvd., Duluth, Minnesota 55804, United States
2. National Research Council, 6201 Congdon Blvd., Duluth, Minnesota 55804, United States
3. CSRA Inc., 109 T.W. Alexander Drive, Research Triangle Park, North Carolina 27711, United States
4. Badger Technical Services, 6201 Congdon Blvd., Duluth, Minnesota 55804, United States
5. Office of Research and Development, National Center for Computational Toxicology, US Environmental Protection Agency, 109 T.W. Alexander Drive, Research Triangle Park, North Carolina 27711, United States