1. Department of Congenital and Hereditary Diseases Mongi Slim Hospital Marsa Tunis Tunisia
2. Faculty of Medicine of Tunis University Tunis El Manar Tunis Tunisia
3. Paediatric Department Military Hospital of Tunis Tunis Tunisia
4. Department of Paediatric Surgery Tunis Tunisia
5. Laboratory of Pathology Anatomy and Cytology Tunis Tunisia
6. Institute for Human Genetics Essen University Hospital Essen Germany
7. Department of Cytogenetics and Reproductive Biology Farhat Hached University Hospital Sousse Tunisia
8. Faculty of Medicine of Sousse University of Sousse Sousse Tunisia