Time to engraftment defined as the first 3 consecutive days in which ANC >= 500 in both arms (standard myeloablative CBT with and without off-the-shelf expanded cord blood progenitors) Up to 2 years [clinicaltrials_resource:b494b21ed387d58cd4e85e6c5a984b74]

The log-rank test will be used. Groups will be compared using Gray's test.

Time to engraftment defined as the first 3 consecutive days in which ANC >= 500 in both arms (standard myeloablative CBT with and without off-the-shelf expanded cord blood progenitors) Up to 2 years [clinicaltrials_resource:b494b21ed387d58cd4e85e6c5a984b74]

The log-rank test will be used. Groups will be compared using Gray's test.