1 Centre de Recherche en Epidémiologie, Biostatistiques, et Recherche Clinique, Ecole de Santé Publique, Université Libre de Bruxelles, Brussels, Belgium; Plate-forme Biostatistiques, Pôle Santé, Université Libre de Bruxelles, Brussels, Belgium. Electronic address: fati.kirakoya@ulb.ac.be.
2 Organisation Ouest Africaine de la Santé, Bobo-Dioulasso, Burkina Faso.
3 Centre for Clinical Research, Kenya Medical Research Institute, Kisumu, Kenya; INDEPTH Network, Accra, Ghana.
4 INDEPTH Network, Accra, Ghana; Unité de Recherche Clinique de Nanoro, Ouagadougou, Burkina Faso.
5 INDEPTH Network, Accra, Ghana; Institut de Recherche en Sciences de la Santé, Institut Africain de Santé Publique, Ouagadougou, Burkina Faso.
6 Centre National de Recherche et de Formation sur le Paludisme, Ouagadougou, Burkina Faso.
7 Centre for Clinical Research, Kenya Medical Research Institute, Kisumu, Kenya; INDEPTH Network, Accra, Ghana; Department of Paediatrics, School of Medicine, Maseno University, Maseno, Kisumu, Kenya.
8 University of Ghana and the African Collaborating Centre for Pharmacovigilance, Accra, Ghana; WHO Collaborating Centre for Advocacy and Training in Pharmacovigilance, University of the Witwatersrand, Johannesburg, South Africa.
9 INDEPTH Network, Accra, Ghana.
10 INDEPTH Network, Accra, Ghana; School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; Department of Mathematics and Statistics, Njala University, Njala, Sierra Leone.