Audiologic and otologic screening.
D000233:Adenoidectomy; D002648:Child; D002669:Child Welfare; D002675:Child, Preschool; D004427:Ear Diseases / Q000175:diagnosis*; D005500:Follow-Up Studies; D006801:Humans; D008403:Mass Screening; D008499:Medical Records; D014068:Tonsillectomy