1. Neonatal Intensive Care Unit, University Hospital of Modena, 41224 Modena, Italy
2. PhD Program in Clinical and Experimental Medicine, University of Modena and Reggio Emilia, 21124 Modena, Italy
3. Neonatal Intensive Care Unit, Ecclesiastical General Hospital F. Miulli, 70021 Acquaviva delle Fonti, Italy
4. Department of Biomedical Science and Human Oncology (DIMO), Neonatal Intensive Care Unit, University Hospital of Bari “Aldo Moro”, 70124 Bari, Italy
5. Neonatal Intensive Care Unit, Azienda Ospedaliero Universitaria delle Marche, 60126 Ancona, Italy
6. Neonatal Intensive Care Unit, Women’s and Children’s Health Department, Maggiore Hospital, 40133 Bologna, Italy
7. Neonatal Intensive Care Unit, Women’s and Children’s Health Department, S. Orsola-Malpighi Hospital, 40138 Bologna, Italy
8. Pediatric Unit, Ospedale B. Ramazzini, 41012 Carpi, Italy
9. Neonatal Intensive Care Unit, Bufalini Hospital, 47521 Cesena, Italy
10. Division of Neonatology, “Valduce” Hospital, 22100 Como, Italy
11. Department of Medical Sciences, Pediatric Section, University Hospital, 44124 Ferrara, Italy
12. Neonatal Intensive Care Unit, Ospedali Riuniti, 71122 Foggia, Italy
13. Pediatric and Neonatal Unit, Morgagni-Pierantoni Hospital of Forlì, 47121 Forli, Italy
14. Neonatal Intensive Care Unit, Carlo Poma Hospital, 46100 Mantova, Italy
15. Neonatal Intensive Care Unit, Medical and Surgical Department of Fetus-Newborn-Infant, “Bambino Gesù” Children’s Hospital IRCCS, 00165 Rome, Italy
16. Neonatal Intensive Unit, San Pietro-Fatebenefratelli Hospital, 00168 Rome, Italy
17. Neonatal Intensive Unit, San Filippo Neri Hospital, 00135 Rome, Italy
18. Neonatal Intensive Unit, ARNAS Civico-Di Cristina-Benfratelli, 90127 Palermo, Italy
19. Neonatal and Pediatric Unit, Polo Ospedaliero Oltrepò, ASST Pavia, 27100 Pavia, Italy
20. Neonatology and Neonatal Intensive Care Unit, Department of Clinical and Experimental Medicine, University Hospital of Pisa, 56124 Pisa, Italy
21. Pediatric and Neonatal Unit, Azienda Ospedaliera Santa Maria degli Angeli, 33170 Pordenone, Italy
22. Neonatal Intensive Care Unit, Infermi Hospital, 47923 Rimini, Italy
23. Neonatal Intensive Care Unit, Santa Maria Nuova Hospital, 42123 Reggio Emilia, Italy
24. Neonatal Intensive Care Unit, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, 34137 Trieste, Italy
25. Neonatology Unit, University Hospital of Udine, 33100 Udine, Italy
26. ASST Pavia, Unità Operativa di Pediatria e Nido, Ospedale Civile, 27029 Vigevano, Italy
27. Pediatric Unit, San Martino Hospital, 32100 Belluno, Italy
28. Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
29. Residency in Pediatrics, Departmento of Medical and Surgical Science, University of Modena and Reggio Emilia, 41124 Modena, Italy
30. Pediatric Emergency Unit, IRCCS Azienda Ospedaliero Universitaria di Bologna, 40138 Bologna, Italy
31. Pediatric and Neonatal Unit, Women’s and Children’s Health Department, Guglielmo da Saliceto Hospital, 29121 Piacenza, Italy
32. Neonatal Intensive Care Unit, University Hospital of Parma, 43126 Parma, Italy