1. 1Kleen Test Products, 1611 Sunset Road, Port Washington, WI 53074, USA
2. 2Water Quality Center, Marquette University, Civil and Environmental Engineering, P.O. Box 1881 Milwaukee, WI, USA
3. 3Microbial Discovery Group, Franklin, WI, USA
4. 4Charles River Laboratories, Microbial Solutions, Newark, DE, USA
5. 5Department of Biological Sciences, College of Natural Sciences, Inha University, Incheon 22212, Republic of Korea
6. 6DOE Joint Genomics Institute, Walnut Creek, CA 94598, USA
7. 7Microbiology Department, Univeristy of Georgia, Athens, GA 30602, USA
8. 8Institute of Microbiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, A-1210 Vienna, Austria