PRIOR CONCURRENT THERAPY: Biologic therapy: No prior bone marrow/stem cell transplantation Chemotherapy: Prior non-ablative chemotherapy at initial diagnosis, during initial remission, or as reinduction therapy (to produce current second remission) allowed At least 4 weeks since hospital discharge after reinduction therapy Endocrine therapy: Not specified Radiotherapy: Not specified Surgery: Not specified Other: No prior post-remission therapy for second remission