[1] GUYS HOSP,ICRF,CLIN ONCOL UNIT,LONDON SE1 9RT,ENGLAND
[2] UNIV LONDON LONDON SCH HYG & TROP MED,DEPT PUBL HLTH & POLICY,LONDON WC1E 7HT,ENGLAND
[3] WITHINGTON HOSP,DEPT RADIOL,NIGHTINGALE BREAST SCREENING UNIT,MANCHESTER M20 8LR,LANCS,ENGLAND
[4] UNIV CAMBRIDGE,DEPT PATHOL,CRC,HUMAN CANC GENET RES GRP,CAMBRIDGE CB2 1QP,ENGLAND
[5] CHRISTIE HOSP & HOLT RADIUM INST,DEPT MED ONCOL,MANCHESTER M20 9BX,LANCS,ENGLAND