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Subjects
- Acquired Immunodeficiency Syndrome -- prevention & control37
- Safe Sex20
- Condoms18
- Poliomyelitis -- prevention & control9
- Poliovirus Vaccine, Oral9
- Vaccination9
- Sexual Partners8
- Acquired Immunodeficiency Syndrome -- transmission6
- Sexual Behavior4
- Health Promotion3
- Interpersonal Relations3
- Travel3
- Acquired Immunodeficiency Syndrome -- psychology2
- Child2
- Health Education2
- Lubricants2
- Sexually Transmitted Diseases -- prevention & control2
- Social Support2
- Acquired Immunodeficiency Syndrome -- diagnosis1
- Arousal1