Daily Impedance Audiometric Screening of Children in a Day-Care Institution<i>Changes through One Month</i>
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Birch L., 1984, A prospective epidemiological investigation of secretory otitis media and tubal dysfunction in children attending day-care centers. Serial tympanometry with an interval of two weeks
Birch L., 1984, A prospective epidemiological investigation of secretory otitis media in children attending day-care centers