Administration, MetronomicCyclophosphamideAntineoplastic Agents, AlkylatingAngiogenesis InhibitorsXenograft Model Antitumor AssaysAntineoplastic Combined Chemotherapy ProtocolsPhosphoramide MustardsVincristineDoxorubicinPrednisoneImmunosuppressive AgentsMethotrexatePulse Therapy, DrugDrug Administration ScheduleEtoposideEpirubicinCombined Modality Therapy