1. 1Microbiology Branch, U.S. Department of Agriculture, 1400 Independence Avenue S.W., Room 344, Aerospace Center, Washington, D.C. 20250-3700, USA
2. 2Biosciences Division, U.S. Department of Agriculture, 1400 Independence Avenue S.W., Room 344, Aerospace Center, Washington, D.C. 20250-3700, USA
3. 3Laboratory Sample Data Management Staff, U.S. Department of Agriculture, 1400 Independence Avenue S.W., Room 344, Aerospace Center, Washington, D.C. 20250-3700, USA
4. 4Food Animal Sciences Division, Office of Public Health and Science, Food Safety and Inspection Service, U.S. Department of Agriculture, 1400 Independence Avenue S.W., Room 344, Aerospace Center, Washington, D.C. 20250-3700, USA