1. New York City Department of Health and Mental Hygiene, New York City, NY, USA.
2. Centers for Disease Control and Prevention, Atlanta, GA, USA.
3. Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
4. Department of Science and Environment, Roskilde University, Rodskilde, Denmark.
5. Department of Global Health, George Washington University, Washington, DC, USA.
6. Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA.
7. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA.