1 European Pediatric Association, Union of National European Pediatric Societies and Associations, Berlin, Germany; Department of Medicine and Surgery & Operative Research Unit of Pediatrics, Campus Bio-Medico University, Rome, Italy; Italian Academy of Pediatrics, Milan, Italy.
2 Institute of Pediatrics, Catholic University, Rome, Italy.
3 European Pediatric Association, Union of National European Pediatric Societies and Associations, Berlin, Germany; Italian Academy of Pediatrics, Milan, Italy.
4 Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy.
5 European Pediatric Association, Union of National European Pediatric Societies and Associations, Berlin, Germany; Department of Pediatrics, Cerrahpaşa University, Istanbul, Turkey.
6 European Pediatric Association, Union of National European Pediatric Societies and Associations, Berlin, Germany; Chair of Pediatrics, Institute for Scientific research "Casa Sollievo", University of Foggia, Foggia, Italy.
7 European Pediatric Association, Union of National European Pediatric Societies and Associations, Berlin, Germany; Albanian Society of Pediatrics, Tirana, Albania.
8 European Pediatric Association, Union of National European Pediatric Societies and Associations, Berlin, Germany; Italian Academy of Pediatrics, Milan, Italy; Chair of Pediatrics, Institute for Scientific research "Casa Sollievo", University of Foggia, Foggia, Italy. Electronic address: mpm@unifg.it.