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HIV Infections
Acquired Immunodeficiency Syndrome
Sexually Transmitted Diseases
Substance-Related Disorders
Sexual Behavior
Risk-Taking
Health Knowledge, Attitudes, Practice
Condoms
Male Homosexuality
Unsafe Sex
Alcohol Drinking
Safe Sex
Adaptation, Psychological
Risk Reduction Behavior
South Africa
United States
Risk Factors
HIV Seropositivity
Sexual Partners
Health Education
Co-Publications
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