[1] UNIV PAVIA,I-27100 PAVIA,ITALY
[2] JOHN RADCLIFFE HOSP,INST MOLEC MED,IMPERIAL CANC RES FUND LABS,OXFORD OX3 9DU,ENGLAND
[3] LMU,KINDERPOLIKLIN,PADIAT GENET ABT,D-80336 MUNICH,GERMANY
[4] BAYLOR COLL MED,DEPT PEDIAT,HOUSTON,TX 77030
[5] BAYLOR COLL MED,DEPT MOLEC & HUMAN GENET,HOUSTON,TX 77030
[6] ULP,CNRS,INSERM,INST GENET & BIOL MOLEC CELLULAIRE,IGBMC,F-67404 ILLKIRCH GRAFFENS,FRANCE
[7] UNIV SASSARI,IST ISTOL & EMBRIOL,I-07100 SASSARI,ITALY