1. Unit of Infectious and Tropical Diseases, Department of Clinical and Experimental Sciences, University of Brescia and ASST Spedali Civili di Brescia, 25123 Brescia, Italy
2. Neonatology and Neonatal Intensive Care Unit, Children’s Hospital, University of Brescia and ASST Spedali Civili di Brescia, 25123 Brescia, Italy