1. School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda;
2. Infectious Diseases Research Collaboration, Kampala, Uganda;
3. Department of Public Health, Centre for Health Economics and Policy, University of Copenhagen, Copenhagen, Denmark;
4. Institute for Immunology and Microbiology, Centre for Medical Parasitology, University of Copenhagen, Copenhagen, Denmark;
5. Department of Disease Control, London School of Hygiene and Tropical Medicine, London, United Kingdom