[1] NEW YORK STATE DEPT HLTH, ROSWELL PK MEM INST, BUFFALO, NY 14263 USA
[2] UNIV CINCINNATI, BARETT CANC CTR, CINCINNATI, OH 45221 USA
[3] UNIV ROCHESTER, CTR CANC, ROCHESTER, NY 14627 USA
[4] HLTH SCI CTR, SYRACUSE, NY USA
[5] UNIV CHICAGO, MED CTR, CHICAGO, IL 60637 USA
[6] EMORY UNIV, ATLANTA, GA 30322 USA
[7] PITTSBURGH CANC INST, PITTSBURGH, PA USA
[8] HAMILTON CIVIC HOSP, HAMILTON, ONTARIO, CANADA
[9] LONG ISL JEWISH MED CTR, JAMAICA, NY USA