1. Infectious Diseases Division, Warren Alpert Medical School of Brown University, Providence, Rhode Island
2. Division of Infectious Diseases and Immunology, Department of Medicine, NYU School of Medicine, New York, New York
3. Department of Medicine, Warren Alpert Medical School of Brown University, Providence, Rhode Island
4. Regional Epidemiology and Health Economics, Sanofi Pasteur, Swiftwater, Pennsylvania
5. Faculty of Medical Sciences, University of Groningen, Groningen, the Netherlands
6. Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, Canada