- Arm III:Patients receive methotrexate IV on days 1, 15, and 22, vinblastine IV on days 2, 15, and 22, and doxorubicin IV and cisplatin IV on day 2. Courses repeat every 28 days. (Arm III closed to accrual effective 07/23/2001.) Treatment in all arms continues for a maximum of 6 courses in the absence of disease progression or unacceptable toxicity. (Arm III closed to accrual effective 07/23/2001.)