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Subjects
- Health Education621
- China165
- Acquired Immunodeficiency Syndrome -- prevention & control163
- Health Promotion81
- Tuberculosis, Pulmonary -- prevention & control53
- Acquired Immunodeficiency Syndrome50
- Hotlines30
- Public Health28
- Disease Transmission, Infectious26
- HIV Infections -- prevention & control26
- Condoms25
- Safe Sex25
- Acquired Immunodeficiency Syndrome -- transmission23
- Child23
- Health Knowledge, Attitudes, Practice23
- Hygiene23
- World Health Organization21
- USSR17
- United States17
- Family Planning Policy14