Prognostic importance of the pre-B-cell immunophenotype and other presenting features in B-lineage childhood acute lymphoblastic leukemia: A pediatric oncology group study

W. Crist, J. Boyett, J. Jackson, T. Vietti, M. Borowitz, A. Chauvenet, N. Winick, A. Ragab, D. Mahoney, D. Head, R. Iyer, H. Wagner, J. Pullen