Bone Marrow Transplantation Versus Prolonged Intensive Chemotherapy for Children With Acute Lymphoblastic Leukemia and an Initial Bone Marrow Relapse Within 12 Months of the Completion of Primary Therapy: Children's Oncology Group Study CCG-1941Paul S. Gaynon, Michael E. Trigg, Arnold J. Altman et al.|Journal of Clinical Oncology|2006Cited by 156