Collecting Tissue Samples From Patients With Leukemia or Other Blood Disorders Planning to Enroll in an ECOG Leukemia Treatment Clinical Trial
Eastern Cooperative Oncology Group
Eastern Cooperative Oncology Group
Canadian Cancer Trials Group
European Organisation for Research and Treatment of Cancer - EORTC
Children's Oncology Group
SWOG Cancer Research Network
European Organisation for Research and Treatment of Cancer - EORTC
European Organisation for Research and Treatment of Cancer - EORTC
European Organisation for Research and Treatment of Cancer - EORTC
European Organisation for Research and Treatment of Cancer - EORTC