ChinaMedical History TakingHistory, 20th CenturyPhylogenyHistory, 19th CenturyHistory, 17th CenturyHistory, 18th CenturyHistory, AncientRisk FactorsHistory of MedicineHistory, 21st CenturyHistory, MedievalHistory, 16th CenturyHistoryPrevalenceSequence Analysis, DNAHistory, 15th CenturyGeographyCase-Control StudiesRural PopulationQuestionnairesGenetic VariationMolecular Sequence DataPhylogeographyCross-Sectional StudiesGenotypeIncidenceFossilsNatural HistoryFamily HealthEvolution, MolecularTime FactorsAge FactorsAsian Continental Ancestry GroupRetrospective StudiesLogistic ModelsProspective StudiesTibetCohort StudiesSmokingFollow-Up StudiesBiological EvolutionReproductive HistoryEconomic DevelopmentSchistosomiasis japonicaRisk AssessmentMedicine, Chinese TraditionalHistory of NursingGenetics, PopulationSchistosoma japonicumUrban PopulationCluster AnalysisOdds Ratio