Toothbrushing frequency and personal hygiene in 14-year-old schoolchildren.
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D000293:Adolescent; D003753:Dental Health Surveys; D004739:England; D005260:Female; D006306:Health Surveys; D006801:Humans; D006920:Hygiene; D008297:Male; D011795:Surveys and Questionnaires; D014099:Toothbrushing