1. School of Population Health, University of New South Wales, Sydney, Australia;
2. Kirby Institute, University of New South Wales, Sydney, Australia;
3. National Directorate of Public Health, Ministry of Health, Luanda, Angola;
4. Faculty of Science, University of Melbourne, Parkville, Australia;
5. Swiss Tropical and Public Health Institute, Allschwil, Switzerland;
6. University of Basel, Basel, Switzerland;
7. The MENTOR Initiative, Huambo, Angola