1. Department of Mathematical Sciences, University of Copenhagen , Universitetsparken 5, Copenhagen 2100, Denmark
2. Burnet Institute , 85 Commercial Road, Melbourne 3004, Australia
3. The World Bank Group , 2121 Pennsylvania Avenue NW, Washington, DC 20433, USA
4. Institute for Disease Modeling at the Bill & Melinda Gates Foundation , 500 Fifth Avenue North, Seattle, WA 98109, USA
5. School of Physics, University of Sydney , Physics Road, Sydney, New South Wales, Camperdown 2006, Australia
6. Bill & Melinda Gates Foundation , 500 Fifth Avenue North, Seattle, WA 98109, USA