1. Department of Pediatrics, Faculty of Medicine, University of Lubumbashi, Lubumbashi, Republic of the Congo
2. Department of Maternal and Child Health, Higher Institute of Medical Techniques of Lubumbashi, Lubumbashi, Republic of the Congo
3. Department of Obstetrics and Gynecology, Faculty of Medicine, University of Lubumbashi, Lubumbashi, Republic of the Congo
4. Department of Pediatrics, Faculty of Medicine, Official University of Mbuji-Mayi, Mbuji-Mayi, The Democratic Republic of the Congo,