1. Pediatric Department, Faculty of Medicine, University of Kamina, Kamina, Democratic Republic of the Congo
2. School of Public Health, University of Kamina, Kamina, Democratic Republic of the Congo
3. Department of Epidemiology and Public Health, Nursing Care Section, Higher Institute of Medical Techniques of Lubumbashi, Lubumbashi, Democratic Republic of the Congo
4. Department of Teaching and Administration in Nursing, Nursing Section, Higher Institute of Medical Techniques of Mbuji-Mayi, Mbuji-Mayi, Democratic Republic of the Congo
5. Department of Public Health, Faculty of Medicine, University of Kamina, Kamina, Democratic Republic of the Congo
6. Department of Internal Medicine, Faculty of Medicine, University of Kamina, Kamina, Democratic Republic of the Congo
7. Ministry of Health, National Expanded Program for Immunization, Kinshasa, The Democratic Republic Of Congo
8. International Centre for Health Systems Strengthening (ICHESS), USA