Sexual health in teenagers.
Kaul
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D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000367:Age Factors; D005220:Fathers; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000706:statistics & numerical data*; D006113:United Kingdom