Population SurveillanceSentinel SurveillanceIntervention StudiesPublic Health SurveillanceUnited StatesTreatment OutcomeDisease OutbreaksProduct Surveillance, PostmarketingImmunologic SurveillanceHealth PromotionDisease NotificationRisk FactorsIncidenceTime FactorsProgram EvaluationPublic Health InformaticsFollow-Up StudiesEarly Medical InterventionHealth EducationInfant, NewbornQuestionnairesEarly Intervention (Education)PrevalenceEpidemiological MonitoringBehavioral Risk Factor Surveillance SystemPatient Education as TopicProspective StudiesPilot ProjectsCost-Benefit AnalysisResearch DesignRetrospective StudiesRandomized Controlled Trials as TopicHealth Knowledge, Attitudes, PracticeHealth BehaviorRisk Reduction BehaviorCommunicable Disease ControlCommunicable Diseases, EmergingRisk AssessmentMass ScreeningCounselingInfluenza, HumanHIV InfectionsOutcome Assessment (Health Care)SeasonsFeasibility StudiesBehavior TherapyPercutaneous Coronary InterventionPatient ComplianceCommunicable DiseasesSEER ProgramPublic HealthData CollectionBioterrorismCenters for Disease Control and Prevention (U.S.)InternetWatchful WaitingRural PopulationAge FactorsExerciseProgram DevelopmentAngioplasty, Balloon, CoronaryEvidence-Based MedicinePregnancyCluster AnalysisPublic Health AdministrationInfection ControlSocioeconomic FactorsCohort StudiesCross-Sectional StudiesSmoking CessationWorld HealthSelf CareQuality of LifeSensitivity and SpecificityLogistic ModelsWounds and InjuriesGreat BritainRegistriesPrimary Health CareAge DistributionMotivationDeveloping CountriesSchoolsClinical ProtocolsAnti-Bacterial AgentsEpidemiologic MeasurementsTelephoneLife StyleCross InfectionPractice Guidelines as TopicGuideline AdherenceSocial SupportColonoscopySelf EfficacyEuropeUrban PopulationNetherlandsExercise TherapyWorld Health OrganizationObesity