1 Italian Society of Pediatrics (SIP), Italy; Institute of Pediatrics, Catholic University Medical School, Rome, Italy; Campus Bio-Medico University Medical School, Rome, Italy. Electronic address: pferrara@rm.unicatt.it.
2 Italian Society of Pediatrics (SIP), Italy; European Pediatric Association-Union of National European Pediatric Societies and Associations (EPA-UNEPSA), Berlin, Germany; Institute of Pediatrics, University of Palermo, Palermo, Italy.
3 Campus Bio-Medico University Medical School, Rome, Italy.
4 European Pediatric Association-Union of National European Pediatric Societies and Associations (EPA-UNEPSA), Berlin, Germany; Italian Federation of Pediatricians (FIMP), Italy.
5 European Pediatric Association-Union of National European Pediatric Societies and Associations (EPA-UNEPSA), Berlin, Germany; Children's Hospital, Hannover Medical School, Hannover, Germany.
6 Italian Society of Pediatrics (SIP), Italy; European Pediatric Association-Union of National European Pediatric Societies and Associations (EPA-UNEPSA), Berlin, Germany; Institute of Pediatrics and Residency program, University of Foggia, Foggia, Italy.