[1] UNIV TURIN,DIPARTIMENTO SCI BIOMED & ONCOL UMANA,I-10126 TURIN,ITALY
[2] IST GIANNINA GASLINI,GENET MOLEC LAB,I-16148 GENOA,ITALY
[3] UNIV GENOA,I-16126 GENOA,ITALY
[4] UNIV MILAN,I-20122 MILAN,ITALY
[5] UNIV HEIDELBERG,KINDERKLIN,W-6900 HEIDELBERG,GERMANY
[6] HOWARD HUGHES MED INST,DEPT CELLULAR BIOL & MOLEC GENET,HOUSTON,TX