1. Institute of International Health, Charité—Universitätsmedizin Berlin, Augustenburger Platz 1, Südring 3B, 13353 Berlin, Germany
2. Swiss Tropical and Public Health Institute (Swiss TPH), University of Basel, Kreuzstrasse 2, 4123 Allschwil, Switzerland
3. NuMIQ Research Focus Area, Faculty of Health Sciences, North-West University, Potchefstroom 2531, South Africa
4. Department of Nursing, University of Limpopo, MankwengTownship, Polokwane 0727, South Africa