Adolescent Adult Aged Antineoplastic Agents--therapeutic use Benzamides Cross-Over Studies Cytarabine--therapeutic use Disease-Free Survival Female Humans Imatinib Mesylate Interferon-gamma--therapeutic use Leukemia, Myelogenous, Chronic, BCR-ABL Positive--drug therapy Male Middle Aged Piperazines--therapeutic use Pyrimidines--therapeutic use Quality of Life Treatment Outcome