1. Center for Food Safety; The Univ. of Georgia; 1109 Experiment St. Griffin; GA 30223; USA
2. Intl. Center for Food Industry Excellence; Texas Tech Univ., Dept. of Animal and Food Sciences; P.O. Box 42141; Lubbock; TX 79409; U.S.A.
3. Dept. of Diagnostic Medicine/Pathobiology; Kansas State Univ.; 332 Coles Hall; Manhattan; KS 66506; USA
4. Dept. of Veterinary and Biomedical Sciences, Univ. of Minnesota; 1971 Commonwealth Ave.; St. Paul; MN 55108; USA