Sexual spin.
Stammers
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D000293:Adolescent; D003075:Coitus / Q000523:psychology*; D003268:Contraception Behavior; D005260:Female; D006293:Health Promotion; D006801:Humans; D011247:Pregnancy; D011253:Pregnancy in Adolescence / Q000706:statistics & numerical data*; D012749:Sexually Transmitted Diseases / Q000453:epidemiology*; D006113:United Kingdom