[1] MASSACHUSETTS GEN HOSP, MED ONCOL UNIT, BOSTON, MA 02114 USA
[2] SUNY UPSTATE MED CTR, SYRACUSE, NY 13210 USA
[3] CANC & LEUKEMIA GRP B, OFF STAT, SCARSDALE, NY USA
[4] UNIV MINNESOTA, MINNEAPOLIS, MN 55455 USA
[5] UNIV N CAROLINA, CHAPEL HILL, NC 27514 USA
[6] N SHORE UNIV HOSP, MANHASSET, NY 11030 USA
[7] WALTER REED ARMY MED CTR, WASHINGTON, DC 20012 USA
[8] UNIV SAN DIEGO HOSP, SAN DIEGO, CA USA
[9] W VIRGINIA UNIV, MED CTR, MORGANTOWN, WV 26506 USA