1 European Paediatric Association/Union of National European Paediatric Societies and Associations (EPA/UNEPSA), Berlin, Germany; Association pour l'Activité et la Recherche Scìentifiques, Neouchatel, Switzerland; Albanian Society of Pediatrics, Tirana, Albania.
2 European Paediatric Association/Union of National European Paediatric Societies and Associations (EPA/UNEPSA), Berlin, Germany; Association pour l'Activité et la Recherche Scìentifiques, Neouchatel, Switzerland; Turkish Pediatric Association, Istanbul, Turkey.
3 European Paediatric Association/Union of National European Paediatric Societies and Associations (EPA/UNEPSA), Berlin, Germany; Association pour l'Activité et la Recherche Scìentifiques, Neouchatel, Switzerland; Scientific Institute "Casa Sollievo della Sofferenza", University of Foggia, Foggia, Italy.
4 European Paediatric Association/Union of National European Paediatric Societies and Associations (EPA/UNEPSA), Berlin, Germany; Association pour l'Activité et la Recherche Scìentifiques, Neouchatel, Switzerland.
5 European Paediatric Association/Union of National European Paediatric Societies and Associations (EPA/UNEPSA), Berlin, Germany; Association pour l'Activité et la Recherche Scìentifiques, Neouchatel, Switzerland; Italian Academy of Pediatrics, Milan, Italy. Electronic address: mpm@unifg.it.