1. Department of Pathobiological Sciences, University of Wisconsin–Madison, Madison, Wisconsin, USA
2. Department of Pathology and Laboratory Medicine, University of Wisconsin–Madison, Madison, Wisconsin, USA
3. University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
4. William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin, USA
5. Department of Medicine, Division of Infectious Diseases, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
6. Wisconsin National Primate Research Center, University of Wisconsin–Madison, Madison, Wisconsin, USA