[1] SIDNEY FARBER CANC INST,DEPT PEDIAT,BOSTON,MA 02115
[2] HARVARD UNIV,SCH MED,CHILDREN HOSP MED CTR,BOSTON,MA 02115
[3] HARVARD UNIV,SCH MED,DEPT MICROBIOL & MOLEC GENET,BOSTON,MA 02115
[4] SIDNEY FARBER CANC INST,DEPT BAS SCI,BOSTON,MA 02115
[5] HARVARD UNIV,CTR BLOOD RES,SCH PUBL HLTH,BOSTON,MA 02115
[6] HARVARD UNIV,SCH PUBL HLTH,DEPT NUTR,BOSTON,MA 02115