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South Africa
Adolescent Behavior
Questionnaires
Heterosexuality
Risk-Taking
Sexual Behavior
Data Collection
Smoking
Safe Sex
Social Desirability
HIV-2
HIV-1
Circumcision, Male
Behavioral Research
Randomized Controlled Trials
Cross-Sectional Studies
Prevalence
Reproducibility of Results
HIV Infections
Substance-Related Disorders
Co-Publications
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4
3
2
1
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