title: Tympanometry and secretory otitis media. Observations on diagnosis, epidemiology, treatment, and prevention in prospective cohort studies of three-year-old children.
mesh_terms: D000158:Acoustic Impedance Tests; D001309:Auditory Threshold; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D010033:Otitis Media / Q000175:diagnosis*; D010034:Otitis Media with Effusion / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy; D011379:Prognosis; D011446:Prospective Studies; D012022:Reflex, Acoustic