1. Maternity Department of the National Hospital Center of Nouakchott Mauritania, Mother and Child Department, Faculty of Medicine of Nouakchott, University of Nouakchott El-Asriya, Nouakchott, Mauritania
2. Emergency Department of Maternity and Neonatology Center of Tunis, Faculty of Medicine of Tunis-El Manar University of Tunis-Tunisia, Tunis, Tunisia