1. Department of Woman and Child Health and Public Health Fondazione Policlinico Universitario A, Gemelli IRCCS–Università Cattolica del Sacro Cuore Rome Italy
2. Neonatal Intensive Care Unit Azienda Sanitaria Romagna Infermi Hospital Rimini Rimini Italy
3. Neonatal Intensive Care Unit Department of Women's and Children's Health Maggiore Hospital Bologna Italy