[1] HARVARD UNIV,SCH PUBL HLTH,DEPT CANC BIOL,BOSTON,MA 02115
[2] HARVARD UNIV,SCH MED,DEPT MED,BOSTON,MA 02115
[3] HARVARD UNIV,SCH MED,DEPT PHARMACOL,BOSTON,MA 02115
[4] BRIGHAM & WOMENS HOSP,BOSTON,MA 02115
[5] MAYO CLIN & MAYO FDN,SCH MED,ROCHESTER,MN 55905