An epidemiologic assessment of a pediatric peak flowmeter.
D002648:Child; D002675:Child, Preschool; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008365:Manometry; D012129:Respiratory Function Tests; D012141:Respiratory Tract Infections / Q000175:diagnosis*; D012572:School Health Services