<qa>  What is the name of the group 1?- Group 1 patients with chronic myelogenous leukemia, AML, myelodysplastic syndromes, or ALL: Patients receive cyclophosphamide IV once daily on days -7 and -6. Patients then undergo total-body irradiation TBI twice daily on days -4 to -1. Patients undergoing unrelated allogeneic umbilical cord blood transplantation UCBT also receive methylprednisone IV and anti-thymocyte globulin ATG IV twice daily on days -2 and -1. 