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LaboratoriesOutpatient Clinics, HospitalAmbulatory CareLaboratories, HospitalClinical Laboratory TechniquesAnimals, LaboratoryMedical Laboratory PersonnelAmbulatory Care FacilitiesAmbulatory Surgical ProceduresClinical Laboratory Information SystemsRetrospective StudiesLaboratory PersonnelProspective StudiesTreatment OutcomeTime FactorsUnited StatesQuality ControlLaboratory Proficiency TestingLaboratory Animal ScienceSensitivity and SpecificityReproducibility of ResultsQuestionnairesMedical Laboratory ScienceHospitalizationChemistry, ClinicalCross-Sectional StudiesReferral and ConsultationHealth Care CostsFollow-Up StudiesSeverity of Illness IndexRisk FactorsClinical Laboratory ServicesEvaluation Studies as TopicSpecimen HandlingInpatientsPatient SatisfactionMicrobiologyCosts and Cost AnalysisAppointments and SchedulesPrevalenceCohort StudiesLaboratories, DentalHospitals, UniversityAge FactorsPatient ComplianceBrazilDrug UtilizationSubstance Abuse Treatment CentersCost-Benefit AnalysisPredictive Value of TestsQuality of LifePathology, ClinicalReagent Kits, DiagnosticPilot ProjectsPoint-of-Care SystemsInfant, NewbornHealth Care SurveysDiagnostic ErrorsMicrobial Sensitivity TestsSurgicentersQuality Assurance, Health CarePolymerase Chain ReactionChronic DiseaseOffice VisitsPsychiatric Status Rating ScalesReference StandardsBacterial InfectionsHospitals, VeteransPhysician's Practice PatternsIncidenceHealth ExpendituresAftercareEmergency Service, HospitalDouble-Blind MethodComorbidityOutcome Assessment (Health Care)Continuity of Patient CareMedical RecordsPopulation SurveillanceMedicineFeasibility StudiesAmbulatory Care Information SystemsMedical Records Systems, ComputerizedVeteransLogistic ModelsRisk AssessmentSex FactorsUrology Department, HospitalAnti-Bacterial AgentsClinical Chemistry TestsPatient Education as TopicGermanyHematologic TestsBacteriologyUnited States Department of Veterans AffairsEnglandFeverHIV InfectionsBiological MarkersPrimary Health Care