1. Fetal Therapy Unit—Umberto Nicolini Vittore Buzzi Children's Hospital Milan Italy
2. Department of Women, Mother and Newborn Vittore Buzzi Children's Hospital University of Milan Milan Italy
3. Epidemiology Unit Fondazione IRCCS Ca’Granda Ospedale Maggiore Policlinico Milan Italy
4. Paediatric Cardiology Unit Vittore Buzzi Children's Hospital Milan Italy