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Pregnancy Complications, Infectious
HIV Infections
Vertical Infectious Disease Transmission
Pregnancy
Gestational Age
Cohort Studies
Prospective Studies
Risk Factors
Pregnancy Outcomes
Premature Infant
Caesarean Section
Multivariate Analysis
HIV-1
Newborn Infant
Anti-HIV Agents
HIV Protease Inhibitors
Zidovudine
CD4 Lymphocyte Count
Vagina
United States
Co-Publications
12
9
7
6
5
4
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