1. Department of Pediatric Anesthesia and Intensive Care, Children’s Hospital “Vittore Buzzi”, Via Ludovico Castelvetro 32, 20154 Milano, Italy
2. Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
3. Department of Pediatric Surgery, Children’s Hospital “Vittore Buzzi”, 20154 Milano, Italy
4. Paediatric Emergency Medicine Leicester Academic (PEMLA) Group, Leicester Hospital, Leicester LE1 5WW, UK
5. Social Science APPlied to Healthcare Improvement Research, SAPPHIRE Group, Health Sciences, Leicester University, Leicester LE1 7RH, UK
6. Center for Global Health Research Studies, Università Cattolica del Sacro Cuore, 00168 Rome, Italy