1. Department of Microbiology and Immunology, University of Western Ontario, London, Canada
2. College of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi, Vietnam
3. Special Immunology Unit and Division of Infectious Diseases, Department of Medicine, Case Western Reserve University, Cleveland, OH, USA
4. Bristol Veterinary School, University of Bristol, Bristol, UK
5. Maple Leaf Medical Clinic and Division of Infectious Diseases, Department of Medicine, University of Toronto, Toronto, Canada
6. Rakai Health Sciences Program, Kalisizo, Uganda
7. Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, USA
8. Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA