Phonocephalography. The probe microphone holder.
D001314:Auscultation / Q000295:instrumentation* / Q000379:methods; D004427:Ear Diseases / Q000175:diagnosis*; D004432:Ear, Middle; D006801:Humans; D009302:Nasopharyngeal Diseases / Q000175:diagnosis*; D009305:Nasopharynx