[1] CASE WESTERN RESERVE UNIV,CANC RES CTR,DEPT MED & BIOCHEM,DIV HEMATOL ONCOL,CLEVELAND,OH 44106
[2] WASHINGTON UNIV,SCH MED,HOWARD HUGHES MED INST,RES LABS,ST LOUIS,MO 63110
[3] UNIV N CAROLINA,SCH MED,DEPT PHYSIOL & BIOCHEM,CHAPEL HILL,NC 27516
[4] UNIV DUNDEE,CANC RES CAMPAIGN LABS,DUNDEE DD1 4HN,SCOTLAND