1. Medical Genetics Unit, Policlinico S. Orsola-Malpighi, Bologna, Italy
2. University Eye Clinic, Pediatric Ophtalmology Service, Department of Neurosciences, Biomedicine and Movement, University of Verona, Verona, Italy
3. Clinical Genetics Service, Department of Pediatrics, Regional Hospital of South Tyrol, Bolzano, Italy
4. Department of Pediatrics, University of Verona, Verona, Italy