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Subjects
- Public Health[remove]307
- United States35
- Sanitation24
- Japan16
- Health Expenditures14
- California12
- Hookworm Infections11
- Public Health Administration11
- New York10
- Social Welfare9
- Australia8
- Disease Transmission, Infectious8
- Toilet Facilities8
- World War II8
- Acquired Immunodeficiency Syndrome7
- Health Status7
- Germany6
- HIV6
- Health Promotion6
- Sexually Transmitted Diseases6