1. Unit of Hematology for Rare Diseases of Blood and Blood-Forming Organs, Laboratory for Molecular Diagnosis of Rare Hematological Diseases, Azienda Ospedaliera Ospedali Riuniti Villa Sofia Cervello, Palermo, Italy
2. Unit of Obstetrical and Gynecology, Fetal Medicine and Prenatal Diagnosis, Azienda Ospedaliera Ospedali Riuniti Villa Sofia Cervello, Palermo, Italy
3. Unit of Medical Genetics, Azienda Ospedaliera Ospedali Riuniti Villa Sofia Cervello, Palermo, Italy