Precancerous ConditionsMetaplasiaStomach NeoplasmsGastritis, AtrophicUterine Cervical NeoplasmsColposcopesLeukoplakia, OralAberrant Crypt FociLeukoplakiaMouth NeoplasmsGastric MucosaCervical Intraepithelial NeoplasiaGastroscopyGastritisHelicobacter pyloriCarcinoma in SituHelicobacter InfectionsUterine Cervical DysplasiaBiopsyCarcinoma, Squamous CellPapillomavirus InfectionsCryotherapyColposcopyHyperplasiaStomachEsophageal NeoplasmsPapillomaviridaeArecaVenezuelaHuman papillomavirus 16ImmunohistochemistryEarly Detection of CancerTumor Markers, Biological1,2-DimethylhydrazineCell Transformation, NeoplasticYin DeficiencyCervix UteriAdenocarcinomaVaginal SmearsPapillomavirus VaccinesHuman papillomavirus 18AdenomaDisease ProgressionCondylomata AcuminataLaryngeal NeoplasmsCarcinogensRisk FactorsChinaColonColonic NeoplasmsOral Submucous FibrosisAnticarcinogenic AgentsPapanicolaou TestColorectal NeoplasmsEsophagusGene Expression Regulation, NeoplasticCarcinomaMass ScreeningDNA, NeoplasmTumor Suppressor Protein p53KeratosisSensitivity and SpecificityDNA MethylationPolymorphism, Single-Stranded ConformationalEpitheliumGenes, p53Retrospective StudiesPolymerase Chain ReactionNeoplasm ProteinsTelomerasePrevalenceRNA, MessengerMicrosatellite RepeatsFollow-Up StudiesCase-Control StudiesKeratosis, ActinicDNA, ViralTime FactorsPrognosisMutationNeoplasm InvasivenessDisease Models, AnimalGenotypeMouth MucosaProspective StudiesNeoplasm StagingApoptosisGene Expression ProfilingStomach DiseasesCross-Sectional StudiesMupapillomavirusTissuesCell Line, TumorIncidenceGarlicGenetic Predisposition to DiseaseBase SequencePolypsSkin NeoplasmsLiver Neoplasms, Experimental