1. Faculty of Medicine and School of Public Health, University of Lubumbashi, Lubumbashi, DRC;
2. Department of Public Health, Institute of Tropical Medicine, Antwerp, Belgium;
3. School of Public Health, Université Libre de Bruxelles, Brussels, Belgium;
4. Department of Tropical Medicine, Faculty of Medicine, University of Kinshasa, Kinshasa, DRC;
5. National Program for the Control of Human African Trypanosomiasis, Kinshasa, DRC