Cochlear ImplantationCochlear ImplantsDeafnessHearing Loss, BilateralHearing Loss, SensorineuralHearing LossRound Window, EarSpeech PerceptionAudiometry, Pure-ToneLanguage DevelopmentHearing TestsScala TympaniVestibulocochlear Nerve DiseasesTemporal BoneCorrection of Hearing ImpairmentPersons With Hearing ImpairmentsHearing Loss, CentralCHARGE SyndromeCochleaHearing Loss, UnilateralAuditory ThresholdAudiometry, Evoked ResponseAudiometrySpeechHearing AidsElectrodes, ImplantedCochlear NerveStapes SurgeryHearingChild LanguageEvoked Potentials, AuditoryEducation of Hearing DisabledSpeech IntelligibilitySpiral GanglionConstitution and BylawsChloral HydrateTreatment OutcomeVestibular DiseasesLanguage TestsOtologic Surgical ProceduresAcoustic StimulationHearing Loss, SuddenOtosclerosisSpeech Discrimination TestsPostoperative PeriodAuditory CortexSound LocalizationEmbryo Implantation, DelayedChild WelfareMeningitis, PneumococcalTinnitusParentsEvoked Potentials, Auditory, Brain StemRetrospective StudiesDisabled ChildrenChild BehaviorTime FactorsVocabularyAuditory PerceptionFollow-Up StudiesLens Implantation, IntraocularHair Cells, AuditoryEar, InnerProspective StudiesLanguageElectric ImpedancePregnancyAge FactorsPostoperative ComplicationsChild Health ServicesChild RearingLongitudinal StudiesPacemaker, ArtificialUterusStentsChild, InstitutionalizedPatient SelectionProsthesis DesignChild Behavior DisordersChild PsychologyEndometriumChild of Impaired Parents