1. Unité de Recherche Clinique de Nanoro, Institut de Recherche en Sciences de la Santé, Nanoro, Burkina Faso
2. IRSS, Centre Muraz, Bobo-Dioulasso, Burkina Faso
3. School of Medical Sciences, KNUST (Agogo Presbyterian Hospital), Kumasi, Ghana
4. Vaccine, GSK, Wavre, Belgium