[1] UNIV LEEDS,DEPT CHILD HLTH,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND
[2] UNIV LEEDS,DEPT CHEM PATHOL,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND
[3] UNIV MANCHESTER,DEPT MED GENET,MANCHESTER M13 9PL,LANCS,ENGLAND
[4] GUYS HOSP,PAEDIAT RES UNIT,LONDON SE1 9RT,ENGLAND
[5] ROYAL LIVERPOOL HOSP,CYTOGENET UNIT,LIVERPOOL L7 8XP,MERSEYSIDE,ENGLAND
[6] COUNTESS CHESTER HOSP,DEPT PAEDIAT,CHESTER,ENGLAND