[1] S Camillo Forlanini Hosp, Operat Unit Pediat, I-00152 Rome, Italy
[2] Sapienza Univ Rome, Dept Mother Child, Immunol & Allergol Unit, Urol Sci, I-00161 Rome, Italy
[3] Belcolle Hosp, Operat Complex Unit Pediat, I-00100 Viterbo, Italy
[4] Univ Milan, Vittore Buzzi Childrens Hosp, Dept Pediat, I-20154 Milan, Italy
[5] Univ Campania Luigi Vanvitelli, Dept Woman Child & Gen & Specialized Surg, I-80100 Naples, Italy
[6] Pediat Allergol & Immunol SIAIP Reg Puglia & Basi, I-73100 Lecce, Italy
[7] Univ Pavia, Pediat Clin, Policlin San Matteo, Pediat Dept, I-27100 Pavia, Italy
[8] Giovanni XXIII Hosp, Operat Complex Unit Pediat & Emergency, I-70056 Bari, Italy
[9] Univ Parma, Mother Child Dept, Pediat Clin, I-43121 Parma, Italy
[10] Garbagnate Milanese Hosp, ASST Rhodense, Pediat Dept, Food Allergy Comm,Italian Soc Pediat Allergy & Im, I-70056 Garbagnate Milanese, Italy