[1] Regina Margherita Children’s Hospital,Department of Pediatric Emergency
[2] University of Turin,Department of Pediatrics, Infectious Diseases Unit
[3] Regina Margherita Children’s Hospital,Department of Pediatrics and Public Health
[4] University of Turin,Department of Public Health and Pediatrics, Microbiology and Virology Unit
[5] Regina Margherita Children’s Hospital,undefined
[6] Molinette Hospital,undefined
[7] University of Turin,undefined