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Survival distributions by surgical debulking for patients with recurrent malignant astrocytomas treated with either conventional chemotherapy (Chemo) or with myeloablative chemotherapy with autologous bone marrow rescue (ABMR). Chemo versus ABMR comparison stratified by surgical debulking: p=0.39. Chemo/Non-Bulky versus ABMR/Non-Bulky unstratified exact comparison: p=.017 [hazard ratio=9.1 (95% confidence interval 1.7–47.2)].
