1 Citoimmunodiagnostics Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Medical School, Turin, Italy - massimiliano.bergallo@unito.it.
2 Unit of Infectious Diseases, Department of Pediatrics, Regina Margherita Children' s Hospital, University of Turin, Turin, Italy - massimiliano.bergallo@unito.it.
3 Citoimmunodiagnostics Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, Medical School, Turin, Italy.
4 Unit of Infectious Diseases, Department of Pediatrics, Regina Margherita Children' s Hospital, University of Turin, Turin, Italy.
5 Unit of Complex Structure Neonatology, Department of Public Health and Pediatric, University of Turin, Turin, Italy.