[1] UNIV WASHINGTON,DEPT PATHOL,SEATTLE,WA 98195
[2] ST MARYS HOSP,UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT BIOCHEM & MOLEC GENET,LONDON W2 1PG,ENGLAND
[3] ROSWELL PK CANC INST,DEPT BIOL MOLEC,BUFFALO,NY 14263
[4] UNIV EDINBURGH,INST CELL & MOLEC BIOL,EDINBURGH EH9 3JR,MIDLOTHIAN,SCOTLAND