1. From the Rambam Medical Center and Technion, Haifa, Israel; Dana Farber Cancer Institute, Boston, MA; Guthrie Medical Center, Sayre, PA; University of Rochester Cancer Center, Rochester, NY; Our Lady of Mercy Cancer Center, New York Medical College, Bronx, NY; Geisinger Medical Center, Danville, PA; Mayo Clinic, Rochester, MN; Immunex Corp, Seattle, WA; and Northwestern University Feinberg School of Medicine, Chicago, IL.