1. Poultry Microbiological Safety Research Unit; Richard B. Russell Agricultural Research Center; USDA-Agricultural Research Service; Athens GA USA
2. College of Veterinary Medicine; Western University of Health Sciences; Pomona CA USA
3. Animal Biosciences and Biotechnology Laboratory; Beltsville Agricultural Research Center; USDA-Agricultural Research Service; Beltsville MD USA
4. Southern Plains Agricultural Research Center; USDA-Agricultural Research Service; College Station TX USA
5. Poultry Science Department; University of Georgia; Athens GA USA
6. Department of Population Health; Poultry Diagnostic Research Center; University of Georgia; Athens GA USA
7. Department of Veterinary and Biomedical Sciences; College of Veterinary Medicine; University of Minnesota; St. Paul MN USA