title: A survey of hearing loss in school children residing in the London borough of Harrow. I. Methodology.
mesh_terms: D000161:Acoustic Stimulation; D001299:Audiometry; D001309:Auditory Threshold; D002648:Child; D002675:Child, Preschool; D004812:Epidemiologic Methods; D005069:Evaluation Studies as Topic; D005260:Female; D006311:Hearing Disorders / Q000175:diagnosis* / Q000453:epidemiology; D006801:Humans; D008131:London; D008297:Male; D009622:Noise; D010865:Pilot Projects