1. Gangarosa Department of Environmental Health, Emory University Rollins School of Public Health, Atlanta, Georgia, USA
2. Department of Global Health, Boston University, Boston, MA
3. Boston University Center for Emerging Infectious Diseases Policy and Research, Boston, MA
4. Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
5. Veterinary Faculty, Universidade Eduardo Mondlane, Maputo, Mozambique
6. Department of Environmental & Occupational Health Sciences, University of Washington School of Public Health, Seattle, Washington, USA