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3. Stapedectomy and Noise;Steffen;The Laryngoscope,1963
4. McGee, T., Smith, M. and Graham, A.: Stapedectomy Patients in Loud Noise. Presented at the Annual Meeting of the Am. Acad. Ophthalmol. Otolaryngol. Las Vegas, Nev., Nov. 3rd, 1962.
5. Incidence of Diagnosed Clinical Otosclerosis;Pearson;Arch. Otol.,1974