Patienterne fik doser à 0, 8 mg/ kg busulfan som infusion hver 6. time - 16 doser i alt - efterfulgt af cyclophosphamid i doser på 60 mg/ kg en gang daglig i 2 dage (BuCy2- regime).
Patients received doses of 0.8 mg/ kg busulfan every 6 hours infusion for a total 16 doses followed by cyclophosphamide at 60 mg/ kg once per day for two days (BuCy2 regimen).