1. Unit of Clinical Pharmacology and pharmacovigilance, University of Kinshasa, Kinshasa, 11, Democratic Republic of Congo
2. Centre National de Pharmacovigilance, Kinshasa, Democratic Republic of Congo
3. Global Health Institute, University of Antwerp, Antwerp, Belgium
4. Swiss Tropical and Public Health Institute, Basel, Switzerland
5. University of Basel, Basel, Switzerland
6. Unit of Clinical Pharmacology and pharmacovigilance, University of Kinshasa, Kinshasa, Democratic Republic of Congo