Epidemiology and natural history of secretory otitis.
D000158:Acoustic Impedance Tests; D002648:Child; D002675:Child, Preschool; D003718:Denmark; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010033:Otitis Media / Q000453:epidemiology*; D010034:Otitis Media with Effusion / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy