ARM I: (MAP; weeks 12-29) Patients receive doxorubicin IV continuously over 48 hours on days 1-2 in weeks 12, 17, 22, and 26 and cisplatin IV over 4 hours on days 1 and 2 in weeks 12 and 17. Patients also receive high-dose MTX IV over 4 hours on day 1 in weeks 15, 16, 20, 21, 24, 25, 28, and 29.