1. Department of Pathology, Section on Comparative Medicine, Wake Forest School of Medicine, Winston-Salem; North Carolina
2. Animal Resources Program, Wake Forest School of Medicine, Winston-Salem; North Carolina
3. Department of Veterinary Resources, University of Louisiana at Lafayette - New Iberia Research Center, Lafayette; Louisiana
4. Division of Veterinary Medicine, Tulane National Primate Research Center, Covington; Louisiana
5. Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem; North Carolina
6. Animal Resources Branch, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta; Georgia