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Subjects
- Condoms[remove]38
- Sexual Behavior[remove]38
- Acquired Immunodeficiency Syndrome -- prevention & control29
- Safe Sex16
- Homosexuality, Male12
- Health Promotion10
- Sexual Partners4
- Acquired Immunodeficiency Syndrome -- transmission2
- HIV Infections -- prevention & control2
- Sexually Transmitted Diseases -- prevention & control2
- Acquired Immunodeficiency Syndrome1
- Antacids1
- Boxing1
- Lubrication1
- Sexuality1