1. U.S. National Poultry Research Center, USDA—ARS, Athens, Georgia, USA
2. Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado, USA
3. Institute of Food Science, University of Natural Resources and Life Sciences, Vienna, Austria
4. Phase Genomics, Inc., Seattle, Washington, USA
5. Division of STD Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
6. National Animal Disease Center, USDA—ARS, Ames, Iowa, USA
7. Department of Poultry Science, University of Georgia, Athens, Georgia, USA