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Stephen
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D000293:Adolescent; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006291:Health Policy; D006293:Health Promotion / Q000458:organization & administration*; D006801:Humans; D008297:Male; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000706:statistics & numerical data; D012573:School Nursing / Q000458:organization & administration*; D012736:Sex Education / Q000458:organization & administration*; D006113:United Kingdom