Administration, MetronomicPiroxicamCyclophosphamideAntineoplastic Agents, AlkylatingAngiogenesis InhibitorsXenograft Model Antitumor AssaysThiazinesAnti-Inflammatory Agents, Non-SteroidalTrismusAntineoplastic Combined Chemotherapy ProtocolsPhosphoramide MustardsVincristineDoxorubicinCyclooxygenase InhibitorsPrednisoneImmunosuppressive AgentsMethotrexatePulse Therapy, DrugDrug Administration ScheduleEtoposideTreatment OutcomeEpirubicinCombined Modality Therapy