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Homeless Persons
Poverty
Cross-Sectional Studies
Viral Load
Cohort Studies
Risk Factors
Interviews as Topic
Health Status
Socioeconomic Factors
Quality of Life
San Francisco
HIV Infections
Substance-Related Disorders
Depression
Housing
Highly Active Antiretroviral Therapy
Anti-HIV Agents
Needle-Exchange Programs
Patient Compliance
Questionnaires
Co-Publications
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