1. Fetal Medicine and Surgery Service Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico Milan Italy
2. Department of Clinical Science and Community Health University of Milan Milan Italy
3. Fetal Medicine Unit Di Venere and Sarcone Hospitals Bari Italy
4. Medical Genetics Unit Di Venere Hospital Bari Italy
5. Medical Genetics Unit Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico Milan Italy
6. Fetal Medicine Unit Palagi Hospital Florence Italy
7. Laboratory of Medical Genetics Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico Milan Italy