1. Institute of Obstetric and Gynecologic Pathology, Department of Surgery, Division of Obstetrics and Gynecology, S. Bambino Hospital, University of Catania, Catania, Italy
2. Complex Operative Unit of Prenatal Diagnosis and Medical Genetics, University Hospital Vittorio Emanuele, Catania, Italy
3. Department of Paediatric Cardiology, S. Bambino Hospital, University of Catania, Catania, Italy
4. Department of Pediatrics, University of Catania, Catania, Italy