Stomach NeoplasmsGastrectomyAdenocarcinomaHelicobacter pyloriEarly Detection of CancerHelicobacter InfectionsGastric MucosaGene Expression Regulation, NeoplasticCell Line, TumorNeoplasm InvasivenessPrognosisNeoplasm StagingPrimary PreventionRisk FactorsNeoplasm MetastasisMice, NudeTumor Markers, BiologicalCarcinoma, Signet Ring CellSurvival RateGastroscopyStomachGenetic Predisposition to DiseaseRetrospective StudiesNeoplasm ProteinsReverse Transcriptase Polymerase Chain ReactionSurvival AnalysisFollow-Up StudiesOxonic AcidProstatic NeoplasmsFluorouracilBreast NeoplasmsAntineoplastic Combined Chemotherapy ProtocolsPeritoneal NeoplasmsNeoplasmsOvarian NeoplasmsAntineoplastic AgentsLung NeoplasmsGastritis, AtrophicColonic NeoplasmsDisease ProgressionRNA, MessengerCell ProliferationCarcinomaProspective StudiesPepsinogen AChinaLymphatic MetastasisImmunohistochemistryDNA MethylationTegafurTreatment OutcomeGastritisPrecancerous ConditionsAdenocarcinoma, ScirrhousRiskUnited StatesCisplatinMetaplasiaApoptosisJapanLymph Node ExcisionBlotting, WesternPancreatic NeoplasmsRNA, Small InterferingRisk AssessmentKaplan-Meier EstimateNeoplasm Recurrence, LocalGene Expression ProfilingDrug Resistance, NeoplasmGenotypeOdds RatioXenograft Model Antitumor AssaysIncidenceCardiaDNA, NeoplasmEsophageal NeoplasmsCancer VaccinesMultivariate AnalysisCenters for Disease Control and Prevention (U.S.)Secondary PreventionChemotherapy, AdjuvantDown-RegulationPolymorphism, GeneticPepsinogen CSmokingAge FactorsColorectal NeoplasmsDisease-Free SurvivalUterine Cervical NeoplasmsCell MovementReceptor, erbB-2Combined Modality TherapyCase-Control StudiesAntineoplastic Agents, PhytogenicMutationTumor Cells, CulturedNeoplasm TransplantationPromoter Regions, GeneticPolymerase Chain ReactionCell Transformation, Neoplastic