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Subjects
- Health Surveys[remove]75
- United States23
- Sanitation19
- Vital Statistics17
- Water Supply16
- Waste Management13
- Pregnancy in Adolescence -- prevention & control11
- Program Evaluation11
- Sewage11
- Massachusetts6
- Sexually Transmitted Diseases -- prevention & control6
- Medically Uninsured -- statistics & numerical data5
- Public Health5
- School Health Services5
- Adolescent Behavior4
- Adolescent3
- California3
- Connecticut3
- Curriculum3
- Insurance, Health -- statistics & numerical data3
