1. Veterans Affairs Medical Center, Minneapolis, Minnesota, USA
2. Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
3. Department of Psychiatry, University of Minnesota, Minneapolis, Minnesota, USA
4. University School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, Australia
5. School of Veterinary Science, Faculty of Science, University of Queensland, Brisbane, Australia
6. Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, USA
7. Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
8. Division of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee, USA