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Multiphasic ScreeningEmergency Service, HospitalEmergency Services, PsychiatricHospitals, UniversityEnglandEmergency Medical ServicesEmergenciesAmbulancesEmergency MedicineWounds and InjuriesEmergency TreatmentEmergency NursingTriageEmergency Medical TechniciansRetrospective StudiesPatient AdmissionUnited StatesCrisis InterventionHospitals, TeachingUtilization ReviewHospitals, CountyCommitment of Mentally IllHospitalizationHealth Services AccessibilityMedical IndigencyHospitals, GeneralHospitals, PsychiatricAccidentsReferral and ConsultationTime FactorsEmergency Medical Service Communication SystemsProspective StudiesOutpatient Clinics, HospitalHospital CostsAir AmbulancesHealth Services Needs and DemandHospitals, UrbanNursing Staff, HospitalState MedicineAccidents, OccupationalCross-Sectional StudiesSpainGreat BritainAfter-Hours CareBrazilHospitals, PediatricMental Health ServicesPatient TransferHealth Care SurveysQuestionnairesHospitals, DistrictFacial InjuriesOff-Road Motor VehiclesEconomics, HospitalPopulation SurveillancePoisoningHospital Bed CapacityHospital DepartmentsHospitals, SpecialLength of StayStomatognathic DiseasesRisk FactorsAmbulatory CareHospitals, PrivatePatient Acceptance of Health CareHealth ServicesInfant, NewbornFiresHealth Services ResearchAge DistributionSkatingPhysicians' OfficesFinancial Management, HospitalAccidents, HomeWounds, GunshotIncidenceHospital PlanningHospitals, RuralSex DistributionMental DisordersArm InjuriesHospital UnitsVictoriaHospital ChargesCross InfectionAccidents, TrafficHome Care ServicesSurgery Department, HospitalPatient DischargeData CollectionDisease OutbreaksAge FactorsHospital Bed Capacity, 500 and overFamily Planning ServicesHospital RecordsEquipment and Supplies, HospitalCraniocerebral TraumaAcute DiseaseInjury Severity ScoreFamily Practice