Ear, MiddleAcoustic Impedance TestsOtoscopyOtitis Media with EffusionOtitis MediaTympanic MembraneCholesteatoma, Middle EarHearing Loss, ConductiveMiddle Ear VentilationEarEar CanalEustachian TubeOtoscopesEar OssiclesOtoacoustic Emissions, SpontaneousEar DiseasesEar, InnerReflex, AcousticHearing TestsAudiometry, Pure-ToneOtolaryngologyTympanic Membrane PerforationHearing DisordersEar NeoplasmsAudiometryChinchillaEar, ExternalHearing LossHearingMalleusStapesMastoidTemporal BoneEvoked Potentials, Auditory, Brain StemAuditory ThresholdIncusOtologic Surgical ProceduresOssicular ProsthesisNeonatal ScreeningTympanoplastyStapediusRound Window, EarTensor TympaniBone ConductionHaemophilus influenzaeStapes SurgeryOtitis Media, SuppurativeCholesteatomaEar CartilageHearing Loss, Mixed Conductive-SensorineuralOtosclerosisStreptococcus pneumoniaeDenmarkCochleaHaemophilus InfectionsNasopharynxPneumococcal InfectionsOval Window, EarMiddle Cerebral ArteryMastoiditisReference ValuesVibrationProspective StudiesSoundGerbillinaeMucous MembraneEar AuricleMoraxella (Branhamella) catarrhalisInfarction, Middle Cerebral ArteryEaracheExudates and TransudatesLabyrinth DiseasesAudiologyPressureAcoustic StimulationAdenoidsNasopharyngeal Diseases