Chronic secretory otitis media: etiologic factors and pathologic mechanisms.
D002675:Child, Preschool; D005064:Eustachian Tube / Q000502:physiology; D005386:Fingersucking / Q000150:complications*; D006801:Humans; D008297:Male; D009305:Nasopharynx / Q000502:physiology*; D010033:Otitis Media / Q000209:etiology* / Q000473:pathology / Q000628:therapy; D011312:Pressure; D013933:Thumb