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Vocalization, AnimalDisabled PersonsHouse CallsHotlinesEcholocationEmergency Medical Service Communication SystemsUnited StatesTelephoneChiropteraHomeless PersonsAnimal CommunicationSound SpectrographyMentally Ill PersonsRisk FactorsVisually Impaired PersonsAmbulancesMentally Disabled PersonsHIV InfectionsQuestionnairesPrevalenceAcousticsAge FactorsTime FactorsIncidencePopulation SurveillanceCross-Sectional StudiesCohort StudiesDisease OutbreaksSex FactorsPoison Control CentersEmergency Medical ServicesOrthopteraAge DistributionProspective StudiesHospital Communication SystemsAfter-Hours CareNight CareSocioeconomic FactorsLongitudinal StudiesFollow-Up StudiesTriagePasseriformesPredatory BehaviorData CollectionSocial BehaviorHealth StatusHealth SurveysSex DistributionReproducibility of ResultsAgingHomebound PersonsAcoustic StimulationCellular PhoneMass ScreeningSingle PersonDementiaRetrospective StudiesAcquired Immunodeficiency SyndromeHealth Services AccessibilityRisk AssessmentLogistic ModelsHospitalizationRemote ConsultationColoradoInterviews as TopicGeriatric AssessmentAlgorithmsAuditory PerceptionPatient Acceptance of Health CareBatrachoidiformesRural PopulationQuality of LifeSoundRegression AnalysisNetherlandsInfant, NewbornWounds and InjuriesPersonhoodChronic DiseaseHealth Knowledge, Attitudes, PracticePatient ComplianceTreatment OutcomeUrban PopulationEmergenciesMental DisordersCounselingCaliforniaTape RecordingRiskCaregiversAccidental FallsComorbiditySexual Behavior, AnimalGenotypeCenters for Disease Control and Prevention (U.S.)Residence CharacteristicsReminder SystemsSocial SupportFrail ElderlySeasons