Combined modality approach to treatment of malignant gliomas--re-evaluation of RTOG 7401/ECOG 1374 with long-term follow-up: a joint study of the Radiation Therapy Oncology Group and the Eastern Cooperative Oncology Group - Nelson, D F; Diener-West, M; Horton, J; Chang, C H; Schoenfeld, D; Nelson, J S (NCI Monogr, 1988)