1. Department of Obstetrics and Gynecology; Faculty of Medicine and Biomedical Sciences & University Teaching Hospital, University of Yaoundé I, Yaoundé, Cameroon
2. Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon
3. Department of Obstetrics and Gynecology; Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon