1. University of Virginia School of Medicine, University of Virginia, Global Infectious Diseases Institute, Charlottesville, Virginia, USA
2. Tufts University School of Medicine, Boston, Massachusetts, USA
3. Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
4. Uniformed Services University, Bethesda, Maryland, USA
5. Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA