1. Department of Integrative Biology, Oregon State University, Corvallis, OR, USA.
2. Department of Mathematics, Oregon State University, Corvallis, OR, USA.
3. Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, UK.
4. Division of International Epidemiology and Population Studies, Fogarty International Center, National Institutes of Health, Bethesda, MD, USA.
5. Department of Entomology, Pennsylvania State University, State College, PA, USA.
6. Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA.
7. Woodrow Wilson School of Public and International Affairs, Princeton University, Princeton, NJ, USA.