Cord Blood Stem Cell TransplantationTransplantation, HomologousHematopoietic Stem Cell TransplantationStem Cell TransplantationGraft vs Host DiseaseTransplantation ConditioningHematologic NeoplasmsCytomegalovirus InfectionsRoseolovirus InfectionsTransplantation, AutologousAspergillosisHistocompatibility TestingStem CellsTreatment OutcomeBone Marrow TransplantationCytomegalovirusFetal BloodRetrospective StudiesTissue DonorsLeukemiaPeripheral Blood Stem Cell TransplantationLymphomaHematopoietic Stem CellsTransplantation ChimeraVidarabineGraft SurvivalGraft vs Leukemia EffectRecurrenceBusulfanRemission InductionMultiple MyelomaPrecursor Cell Lymphoblastic Leukemia-LymphomaLymphoma, Non-HodgkinImmunosuppressive AgentsMyeloablative AgonistsGraft vs Tumor EffectImmunocompromised HostLeukemia, Myeloid, AcuteT-LymphocytesHistocompatibilityTransplantationWhole-Body IrradiationTime FactorsCombined Modality TherapyLeukemia, Myelogenous, Chronic, BCR-ABL PositiveSurvival AnalysisSurvival RateLymphoproliferative DisordersMyelodysplastic SyndromesLeukemia, Lymphocytic, Chronic, B-CellLymphocyte DepletionEmbryonic Stem CellsSpinal CordSalvage TherapyAntigens, CD34Hodgkin DiseaseOpportunistic InfectionsHematopoietic Stem Cell MobilizationVirus ActivationAdult Stem CellsMycosesSiblingsAntineoplastic Combined Chemotherapy ProtocolsAnemia, AplasticCyclophosphamideCell DifferentiationAcute DiseaseHematologic DiseasesHepatic Veno-Occlusive DiseaseAntineoplastic AgentsChimerismDisease-Free SurvivalFlow CytometryMinor Histocompatibility AntigensFollow-Up StudiesGraft RejectionLymphocyte TransfusionImmunosuppressionAntilymphocyte SerumCells, CulturedHLA AntigensHerpesvirus 6, HumanPluripotent Stem CellsBlood Transfusion, AutologousGanciclovirPrognosisLeukocyte TransfusionFatal OutcomeMelphalanNeoplasm, ResidualSpinal Cord InjuriesRisk FactorsAntibodies, NeoplasmTransplantation ImmunologyAntibodies, MonoclonalBone Marrow CellsProspective StudiesNeoplasmsAntiviral AgentsPolymerase Chain Reaction