1. U.S. Geological Survey, Wyoming/Montana Water Science Center, 3162 Bozeman Ave., Helena, Montana 59601, United States
2. U.S. Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Atlanta, Georgia 30333, United States
3. U.S. Geological Survey, Fort Collins Science Center, 2150 Centre Ave., Bldg. C, Fort Collins, Colorado 80526, United States
4. U.S. Geological Survey, Eastern Ecological Science Center, 11649 Leetown Road, Kearneysville, West Virginia 25430, United States
5. Department of Microbiology & Cell Biology, Montana State University, P.O. Box 173520, Bozeman, Montana 59717, United States
6. Western Regional Research Center, U.S. Department of Agriculture Agricultural Research Service, 800 Buchanan St., Albany, California 94710, United States
7. Center for Biofilm Engineering, Chemical and Biochemical Engineering Department, Montana State University, 366 Barnard Hall, Bozeman Montana 59717, United States
8. CSIRO Environment, Private Bag No. 5, Wembley, Western Australia 6913, Australia