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Subjects
- Substance-Related Disorders -- prevention & control198
- Health Knowledge, Attitudes, Practice196
- Fredrickson, Donald S.193
- Homosexuality, Male192
- National Institutes of Health (U.S.)192
- China188
- World Health Organization.183
- Health Behavior175
- United States174
- Facility Design and Construction167
- Sexually Transmitted Diseases -- prevention & control166
- Hotlines149
- Obstetrics142
- Midwifery133
- Adolescent128
- Sexual Partners123
- Acquired Immunodeficiency Syndrome -- psychology117
- Clothing117
- HIV Infections109
- Administrative Personnel104