- Arm II: Patients receive 1 course of standard dose chemotherapy consisting of etoposide IV over 1 hour followed by cisplatin IV over 1 hour and ifosfamide IV over 1 hour on days 1-5. Peripheral blood stem cells (PBSC) are harvested around day 12-15. Patients also receive daily filgrastim (G-CSF) subcutaneously beginning on day 6 and continuing until PBSC collection is complete.