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Italy
HIV Infections
Acquired Immunodeficiency Syndrome
AIDS-Related Opportunistic Infections
Kaposi's Sarcoma
HIV Seropositivity
CD4 Lymphocyte Count
Highly Active Antiretroviral Therapy
Cohort Studies
Risk Factors
Time Factors
Incidence
Prospective Studies
Prevalence
Longitudinal Studies
Age Factors
Intravenous Substance Abuse
Disease Progression
Anti-HIV Agents
HIV-1
Co-Publications
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