Maintenance Chemotherapy or Observation Following Induction Chemotherapy and Radiation Therapy in Treating Patients With Newly Diagnosed Ependymoma
Children's Oncology Group
Children's Oncology Group
Lymphoma Study Association
M.D. Anderson Cancer Center
Children's Oncology Group
National Cancer Institute (NCI)
Children's Hospital of Philadelphia
National Cancer Institute (NCI)
Children's Oncology Group
ETOP IBCSG Partners Foundation
National Cancer Institute (NCI)
National Institutes of Health Clinical Center (CC)