PRIOR CONCURRENT THERAPY: Biologic therapy: No prior bone marrow, peripheral blood stem cell, or umbilical cord blood transplant Chemotherapy: Cumulative lifetime dose of doxorubicin no greater than 450 mg/m2 (or equivalent dose of mitoxantrone or daunorubicin) Endocrine therapy: Not specified Radiotherapy: Not specified Surgery: Not specified Other: No concurrent involvement in any other clinical trial that may affect hematologic engraftment