Hemoglobin >= g/dL, within weeks of randomization Within weeks prior to randomization: Hemoglobin must be >= g/dL STEP I: Hemoglobin >= g/dL (obtained within days prior to randomization) Hemoglobin >= g/dL within days prior to step randomization Hemoglobin > g/dL, obtained within weeks prior to randomization Hemoglobin >= . g/dL measured within days prior to randomization Hemoglobin >= . g/L within weeks before randomization Obtained within days prior randomization: hemoglobin must be >= g/dL Hemoglobin >= . g/dL, within weeks of randomization Hemoglobin ? . g/dL independent of transfusion and/or growth factors within months prior to randomization Within days of randomization: Hemoglobin >= g/dL Hemoglobin >= . g/dL within days prior to randomization Obtained within days of randomization: Hemoglobin >= . g/dL Hemoglobin >= . g/dL, independent of transfusion and/or growth factors within months prior to randomization Obtained =< days prior to randomization: Hemoglobin >= . g/dL Hemoglobin of >= g/dL, independent of transfusion and/or growth factors within months prior to randomization Hemoglobin >= . g/dL, independent of transfusion and/or growth factors within months prior to randomization Obtained =< days prior to randomization:\r\nHemoglobin > . g/dL Within days prior to randomization: Hemoglobin must be >= g/dL Hemoglobin ? . g/dL without transfusion and/or growth factors in the months prior to randomization Hemoglobin must be >= g/dL within days before randomization Hemoglobin >= g/dL within four weeks prior to randomization Hemoglobin >= g/dL continuation of erythropoietin products is permitted obtained =< days prior to randomization; hemoglobin must be stable >= g/dL >= days without blood transfusion to maintain hemoglobin level Hemoglobin > . g/dL (obtained =< days prior to randomization) Hemoglobin >= . g/dL (hemoglobin may be supported by transfusion) obtained =< days prior to randomization Hemoglobin >= . g/dL obtained =< days prior to randomization Hemoglobin >= . g/deciliter should be obtained with days prior to randomization Hemoglobin ? g/dL ( g/L) within days prior to randomization Hemoglobin level less than or equal to . g/dL as assessed by the local laboratory; sample obtained within days prior to randomization (retest in screening is acceptable). Hemoglobin >= g/dL or hematocrit >= % obtained =< days prior to randomization Hemoglobin >= g/dL (. mmol/L) (evaluated within days of randomization); subjects may not have had a transfusion within days of screening assessment