title: Secretory otitis media. The significance of negative middle ear pressure and the results of a controlled study of ventilation tubes.
mesh_terms: D000158:Acoustic Impedance Tests; D001302:Audiometry, Speech; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004322:Drainage; D004432:Ear, Middle / Q000503:physiopathology*; D005260:Female; D006320:Hearing Tests; D006801:Humans; D007440:Intubation; D008297:Male; D010033:Otitis Media / Q000503:physiopathology*; D010034:Otitis Media with Effusion / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D011312:Pressure; D012621:Seasons; D012737:Sex Factors