TopotecanTopoisomerase I InhibitorsAntineoplastic AgentsCamptothecinDrug Administration ScheduleAnemia, RefractoryInfusions, IntravenousRefractory Period, ElectrophysiologicalAntineoplastic Combined Chemotherapy ProtocolsOvarian NeoplasmsDNA Topoisomerases, Type ITreatment OutcomeAnemia, Refractory, with Excess of BlastsTopoisomerase InhibitorsDrug Resistance, NeoplasmSalvage TherapyNeutropeniaCarcinoma, Small CellDose-Response Relationship, DrugThrombocytopeniaMaximum Tolerated DoseNeoplasm Recurrence, LocalAdministration, OralNeoplasmsArea Under CurveEtoposideAntineoplastic Agents, PhytogenicCisplatinRecurrencePaclitaxelLung NeoplasmsMitoxantroneAdministration, MetronomicRhabdomyosarcomaRetinal NeoplasmsAcridinesSmall Cell Lung CarcinomaATP-Binding Cassette TransportersNeuroblastoma