1. Meyer Children's Hospital IRCCS Florence Italy
2. Department of Pediatric Carlo Poma Hospital Mantova Italy
3. Pediatric Emergency Unit Di Cristina Children's Hospital, Azienda di Rilievo Nazionale e di Alta Specializzazione Civico Di Cristina Benfratelli Palermo Italy
4. Pediatric Department Pugliese Ciaccio Hospital Catanzaro Italy
5. Department of Health Science and Community Health University of Milan Milan Italy
6. Pediatric Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Milan Italy