1 European Paediatric Association-Union of National Paediatric Societies and Associations, Berlin, Germany; Emeritus Paediatrician, Bath, United Kingdom.
2 European Paediatric Association-Union of National Paediatric Societies and Associations, Berlin, Germany; Federal State Budgetary Institution "Scientific Centre of Children's Health" Moscow, Russian Federation, Moscow, Russia.
3 European Paediatric Association-Union of National Paediatric Societies and Associations, Berlin, Germany; University of Istanbul, Istanbul University Cerrahpa?a Medical Faculty Neonatology Unit, Istanbul, Turkey.
4 European Paediatric Association-Union of National Paediatric Societies and Associations, Berlin, Germany; Department of Pediatrics, University of Foggia, Scientific Institute "Casa Sollievo della Sofferenza", Foggia, Italy. Electronic address: [email protected].