A survey of audiological services within the school system.
D000293:Adolescent; D001298:Audiology / Q000592:standards*; D001301:Audiometry, Pure-Tone; D002648:Child; D006311:Hearing Disorders / Q000517:prevention & control*; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D012572:School Health Services / Q000600:supply & distribution*; D014481:United States