Ossicular ProsthesisHearing Loss, Mixed Conductive-SensorineuralRound Window, EarEar, MiddlePregnenedionesDrug ImplantsBone ConductionProgesterone CongenersCholesteatoma, Middle EarEarOtitis Media with EffusionEar OssiclesTympanic MembraneDental ImplantsOtitis MediaEar DiseasesEar, InnerMiddle Ear VentilationEustachian TubeProstheses and ImplantsEar NeoplasmsEar CanalChinchillaAcoustic Impedance TestsEar, ExternalMalleusStapesTemporal BoneOtoscopyMastoidProgesteroneIncusHearing Loss, ConductiveOtologic Surgical ProceduresCattleBreast ImplantsImplants, Experimental