[1] G GASLINI CHILDRENS HOSP,DEPT DIETET,I-16147 GENOA,ITALY
[2] G GASLINI CHILDRENS HOSP,LAB CLIN ANAL 1,I-16147 GENOA,ITALY
[3] NORTHWICK PK HOSP & CLIN RES CTR,LISTER INST INFECT & TROP DIS,LONDON,ENGLAND
[4] OSPED PAUSILLIPON,DEPT PAEDIAT 1,NAPLES,ITALY
[5] UNIV PALERMO,OSPED BAMBINI,DEPT INFECT DIS,PALERMO,ITALY
[6] PRESIDIO OSPED D COTUGNO,UNITA SANIT LOCALE 41,NAPLES,ITALY
[7] IST SUPER SANITA,PARASITOL LAB,I-00161 ROME,ITALY