1. Maternal and Child DepartmentOspedali Riuniti di Ancona via F. Corridoni 11 60123 Ancona Italy
2. Department of Woman and Child Health and Public HealthDivision of Neonatology, Fondazione Policlinico Universitario A. Gemelli IRCCS Largo A. Gemelli 8 00168 Rome Italy
3. Department DICAMUniversity of Bologna‐Campus of Cesena Via Pavese 50 47522 Cesena Italy