1. High Risk Pregnancy Unit Children and Public Health Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy
2. Fetal Medicine and Surgery Service Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico Milan Italy
3. Fetal Medicine Unit Di Venere and Sarcone Hospitals Bari Italy
4. Department of Clinical Science and Community Health University of Milan Italy