[1] SAN CARLO BORROMEO HOSP,DEPT PEDIAT,MILAN,ITALY
[2] B GESU INST,DEPT NEUROL,ROME,ITALY
[3] UNIV PADUA,DEPT PEDIAT,PADUA,ITALY
[4] GIOVANNI XXIII HOSP,DEPT METAB DIS,BARI,ITALY
[5] UNIV ROME,DEPT CHILD NEUROL,ROME,ITALY
[6] B GESU INST,DEPT METAB DIS,ROME,ITALY
[7] UNIV NAPLES,DEPT PEDIAT,NAPLES,ITALY
[8] UNIV PAVIA,DEPT PEDIAT,PAVIA,ITALY
[9] C BESTA INST,CHILD NEUROL DEPT,MILAN,ITALY
[10] C BESTA INST,DEPT BIOCHEM & GENET,MILAN,ITALY