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Subjects
- Safe Sex13
- Schools, Nursing3
- Self-Help Groups1
- Sexual Abstinence1
- Sexual Behavior3
- Sexually Transmitted Diseases1
- Social Support1
- Socioeconomic Factors1
- South Mountain Restoration Center (Pa.)2
- Substance Abuse, Intravenous -- prevention & control1
- Substance-Related Disorders3
- Substance-Related Disorders -- prevention & control2