Anna Flamigni(1), Giulia Zamagni(1), Gilda Paternuosto (1), Sara Abbate(2,3), Anna Arbo(1,3)

(1) IRCCS Materno Infantile Burlo Garofolo, 34137 Trieste; (2) IRCCS Ospedale Pediatrico Bambino Gesù, 00165 Roma; (3) INCiPiT– Italian Network For Paediatric Clinical Trials,00152 Roma