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Subjects
- Humans3
- United States3
- AIDS Serodiagnosis1
- Adolescent1
- Africa1
- Aged1
- Ambulatory Care1
- Asia1
- Australia1
- Child Health Services1
- Choice Behavior1
- Chronic Disease -- therapy1
- Community Health Services -- statistics & numerical data1
- Cooperative Behavior1
- Credentialing1
- Decision Making1
- Demography1
- Dental Caries -- prevention & control1
- Dental Caries -- therapy1
- Developed Countries1