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Sexual Behavior
Adolescent Behavior
Questionnaires
Health Knowledge, Attitudes, Practice
Contraception Behavior
Coitus
Pregnancy in Adolescence
Sex Education
Peer Group
Sexual Partners
England
Great Britain
Contraception
School Health Services
Age Factors
Health Promotion
Puberty
Sexually Transmitted Diseases
Type 1 Diabetes Mellitus
Pregnancy
Co-Publications
11
2
1
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