1. Neonatal and Pediatric Unit, Polo Ospedaliero Oltrepò, ASST Pavia, Via Volturno 14, 27058 Voghera, Italy
2. Faculty of Medicine, UniCamillus-Saint Camillus International University of Health Sciences, Via di Sant’Alessandro 8, 00131 Rome, Italy
3. Neonatologic Unit, Villa Margherita Private Clinic, Viale di Villa Massimo 48, 00161 Rome, Italy
4. Neonatal Intensive Care Unit, Children’s Hospital, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123 Brescia, Italy
5. Division of Neonatology, ‘Valduce’ Hospital, Via Dante Alighieri 11, 22100 Como, Italy
6. Neonatal Intensive Care Unit, ASST Grande Ospedale Metropolitano Niguarda, Piazza dell’Ospedale Maggiore 3, 20162 Milan, Italy
7. Neonatal Intensive Care Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Via Francesco Sforza 28, 20122 Milan, Italy
8. Division of Neonatology, Central Teaching Hospital of Bolzano, Via Lorenz Böhler 5, 39100 Bolzano, Italy
9. Department of Mother and Child Health, Azienda USL Toscana Nord Ovest, Via A. Cocchi, 7/9, 56121 Pisa, Italy
10. Neonatal Intensive Care Unit, A.U.O.Policlinico ‘Paolo Giaccone’, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties ‘G. D’Alessandro’, University of Palermo, Via del Vespro 129, 90126 Palermo, Italy
11. Department of Clinical Sciences and Community Health, University of Milan, Via della Commenda 19, 20122 Milan, Italy
12. Department of BioMedical and Clinical Sciences, University of Milan, Via Gian Battista Grassi 74, 20122 Milan, Italy
13. Department of Obstetrics and Gynecology, Hospital V. Buzzi, ASST Fatebenefratelli Sacco, Via Lodovico Castelvetro 32, 20154 Milan, Italy
14. Department of Obstetrics and Gynaecology, Mater Dei Hospital, Via Samuel F. Hahnemann 10, 70125 Bari, Italy
15. Department of Surgical Sciences, University of Rome Tor Vergata, Via Montpellier, 1, 00133 Rome, Italy
16. Obstetrics and Gynecology, Policlinico Casilino, Via Casilina 1049, 00169 Rome, Italy
17. Department of Woman, Child and General and Specialized Surgery, University of Campania “Luigi Vanvitelli”, Via Luigi De Crecchio 2, 80138 Naples, Italy
18. Neonatal Intensive Care Unit, Fatebenefratelli Isola Tiberina—Gemelli Isola, Via di Ponte Quattro Capi 39, 00186 Rome, Italy
19. Neonatology and Neonatal Intensive Care Unit, Policlinico Casilino, Via Casilina 1049, 00169 Rome, Italy