1. Centre for Infectious Disease Research in Zambia, Lusaka, Zambia
2. Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
3. College of Public Health, Medical & Veterinary Sciences, James Cook University, Townsville, Australia
4. Department of Public Health Environments and Society, Faculty of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, United Kingdom
5. Washington University School of Medicine in St. Louis, MO, USA
6. Georgetown University, Washington, DC, USA