1. Laboratory of Bacterial Genomics, Department of Pathobiological Sciences, University of Wisconsin—Madison, Madison, Wisconsin 53706
2. National Animal Disease Center, U.S. Department of Agriculture-Animal Research Service, Ames, Iowa
3. Department of Internal Medicine, University of New Mexico Health Science Center, 915 Camino de Salud, Albuquerque, New Mexico 87131
4. Center for Innovations in Medicine, Arizona State University, Tempe, Arizona 85287-5001