Hemoglobin >= 10 g/dL without transfusion within 4 days prior to enrollmentXx_NEWLINE_xXHemoglobin >= 9 g/dL without transfusion within 7 days prior to enrollmentXx_NEWLINE_xXHemoglobin >= 8.0 g/dl, with or without transfusionXx_NEWLINE_xXWithin 28 days prior to administration of study treatment: Hemoglobin >= 10 g/dL with no pack red blood cell transfusion in the past 28 daysXx_NEWLINE_xXWithin 28 days prior to administration of therapy: Hemoglobin >= 10 g/dL with no blood transfusion within 28 days of initiation of therapyXx_NEWLINE_xXHemoglobin >= 10 g/dL with no blood transfusion in the past 28 daysXx_NEWLINE_xXHemoglobin >= 9 g/dL without transfusion in the preceding 7 daysXx_NEWLINE_xXHemoglobin >= 9 g/dL, patients may receive transfusion to meet criterion within 30 days of day 1 of studyXx_NEWLINE_xX