Molecular heterogeneity in complete cytogenetic responders after interferon-alpha therapy for chronic myelogenous leukemia: low levels of minimal residual disease are associated with continuing remission. German CML Study Group and the UK MRC CML Study Group
III. Medizinische Universit?tsklinik, Fakult?t für Klinische Medizin, Mannheim der Universit?t Heidelberg, Mannheim, Germany. hochhaus@rumms.uni-mannheim.de