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HIV-1
HIV Infections
Acquired Immunodeficiency Syndrome
Intravenous Substance Abuse
Thailand
United States
Uganda
Phylogeny
Risk Factors
Molecular Sequence Data
Incidence
Cohort Studies
HIV Envelope Protein gp120
HIV Antibodies
HIV Protease
DNA, Viral
HIV Seropositivity
Disease Outbreaks
Amino Acid Sequences
Sequence Analysis, DNA
Co-Publications
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