[1] HAMMERSMITH HOSP,ROYAL POSTGRAD MED SCH,MOLEC GENET LAB,LONDON W12 0HS,ENGLAND
[2] HAMMERSMITH HOSP,ROYAL POSTGRAD MED SCH,MRC,LEUKAEMIA UNIT,LONDON W12 0HS,ENGLAND
[3] HAMMERSMITH HOSP,ROYAL POSTGRAD MED SCH,DEPT HAEMATOL,LONDON W12 0HS,ENGLAND
[4] MRC,MOLEC BIOL LAB,CAMBRIDGE,ENGLAND