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Subjects
- Health Promotion[remove]527
- Acquired Immunodeficiency Syndrome -- prevention & control144
- Health Education81
- Safe Sex67
- Condoms66
- United States56
- Humans43
- HIV Infections -- prevention & control40
- Smoking -- prevention & control36
- Sexual Behavior28
- Health Behavior25
- Homosexuality, Male25
- Child24
- Health Knowledge, Attitudes, Practice23
- Sexually Transmitted Diseases -- prevention & control20
- China18
- Global Health18
- Hygiene18
- Adolescent17
- Health Care Reform17