<qa>  What is the ECOG performance status of patients?OUTLINE: This is a double-blind, placebo-controlled, randomized, multicenter study. Patients are stratified according to participating center, ECOG performance status 0-1 vs 2-3, and hemoglobin prior to study 10 mgdL or less vs greater than10 mgdL. Patients are randomized to one of two treatment arms. 