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Subjects
- Condoms[remove]50
- Acquired Immunodeficiency Syndrome -- prevention & control41
- Safe Sex38
- Sexual Behavior11
- Health Promotion9
- Homosexuality, Male5
- Sexually Transmitted Diseases -- prevention & control5
- Sexual Partners3
- Lubricants2
- Acquired Immunodeficiency Syndrome -- transmission1
- HIV Infections -- prevention & control1
- Needle Sharing -- adverse effects1
- Sex Work1
- Switzerland1
- Tom, of Finland, 1920-1991.1