title: Physiology and pathology of the eustachian tube as observed by direct examination with a catheterizing nasopharyngoscope.
authors.forename: L K
authors.initials: LK
authors.lastname: PITMAN
mesh_terms: D004724:Endoscopy; D005064:Eustachian Tube / Q000502:physiology*; D006801:Humans; D009305:Nasopharynx