1. Unit of Microbiology and Diagnostic Immunology, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
2. Department of Biomedical Sciences, Humanitas University, Milan, Italy
3. IRCCS Humanitas Research Hospital, Milan, Italy
4. Department of Clinical and Community Sciences, Università degli Studi di Milano, Milan, Italy
5. Department of Pediatric Hematology and Oncology and of Cell and Gene Therapy, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
6. Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
7. Anesthesia and Critical Care Medicine, ARCO Rome, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
8. Neonatal Intensive Care Unit, Medical and Surgical Department of the Fetus Newborn and Infant, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
9. Pediatric Intensive Care Unit, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
10. Health Directorate, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
11. Department of Laboratories, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
12. Chemical-Clinical and Microbiological Analysis, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
13. General Pediatrics Unit, Pediatric Emergency and General Pediatrics Department, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
14. Sapienza University of Rome, Rome, Italy