1. Neonatal Intensive Care Unit “San Giovanni Calibita Fatebenefratelli” Hospital, Isola Tiberina Rome Italy
2. Neonatal Intensive Care Unit Infermi Hospital Rimini Italy
3. Neonatal Intensive Care Unit ‘Sacro Cuore di Gesù’ Fatebenefratelli Hospital Benevento Italy
4. Department of Woman and Child Health and Public Health Fondazione Policlinico Universitario Agostino Gemelli IRCCS Rome Italy