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HIV Infections
Acquired Immunodeficiency Syndrome
Mexico
India
Developing Countries
Health Care Costs
Socioeconomic Factors
Health Services Accessibility
Health Promotion
Cost Benefit Analysis
Condoms
Prostitution
Unsafe Sex
Program Evaluation
Health Knowledge, Attitudes, Practice
Risk-Taking
Costs and Cost Analysis
Preventive Health Services
Anti-HIV Agents
Pregnancy
Co-Publications
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