<qa>  What is the COPADM regimen?MAINTENANCE THERAPY: Patients receive the COPADM regimen comprising vincristine IV and methotrexate IV over 4 hours on day 0; PRED or MePRDL IV or orally on days 0-7; doxorubicin IV over 30-60 minutes, and cyclophosphamide IV over 30 minutes on days 1 and 2; methotrexate IT and hydrocortisone IT on day 1; and leucovorin calcium IV or orally every 6 hours on days 1-3 12 doses. 