1. Service of Embryo-Fetopathology, Center for Maternity and Neonatology of Tunis, Faculty of Medicine, Tunis El Manar University, Tunis, Tunisia
2. Department of histology-embryology, Faculty of Medicine of Tunis, Tunis El Manar University, Tunisia
3. Service of Congenital and Hereditary Diseases, Hospital of Charles Nicole, Tunis, Tunisia
4. Service of Pathological Anatomy, Salah Azaiez Institute, Tunis, Tunisia