[1] UNIV CALIF SAN DIEGO,DEPT MED,DIV MED GENET,LA JOLLA,CA 92093
[2] UNIV CATANIA 1,PEDIAT CLIN,CATANIA,ITALY
[3] ADELAIDE WOMENS & CHILDRENS HOSP,CTR MED GENET,DEPT CYTOGENET & MOLEC GENET,ADELAIDE,SA 5006,AUSTRALIA
[4] ROYAL CHILDRENS HOSP,MURDOCH INST,MELBOURNE,VIC 3052,AUSTRALIA
[5] UNIV WESTERN AUSTRALIA,DEPT BIOCHEM,NEDLANDS,WA 6009,AUSTRALIA
[6] QUADRANT RES FDN,CAMBRIDGE CB2 2SY,ENGLAND