The head louse in England: prevalence amongst schoolchildren.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004739:England; D005260:Female; D006801:Humans; D010373:Lice Infestations / Q000453:epidemiology* / Q000517:prevention & control; D008297:Male; D012572:School Health Services