1. Department of Psychology, George Washington University, Washington, DC, USA
2. Department of Medicine, Division of Infectious Diseases, Georgetown University Medical Center, Washington, DC, USA
3. Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
4. Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
5. Department of Behavioral and Community Health Sciences, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
6. Division of Infectious Diseases, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA