Subjects: HIV infection epidemiology; CROSS-sectional method; SEXUAL partnersCHINA
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Subjects: DIAGNOSIS of HIV infections; CONFIDENCE intervals; MULTIPLE regression analysisAUSTRALIA
Subjects: HIV infection epidemiology; HIV infections; HIV-positive personsCHINA
Subjects: HIV infection transmission; HETEROSEXUALITY; PUBLIC health surveillanceAUSTRALIA
Subjects: HIV prevention; CONDOMS; CONFIDENCE intervalsFRANCE
Subjects: HIV prevention; HIV infection risk factors; CONFIDENCE intervalsVIETNAM
Subjects: HIV infection risk factors; HIV infection epidemiology; BEHAVIORISRAEL
Subjects: HIV infection risk factors; SEXUALLY transmitted disease risk factors; CONFIDENCE intervalsBRAZIL
Subjects: HIV infections & psychology; ANTIRETROVIRAL agents; HIV infection epidemiologyNEW York (State)
Subjects: HIV prevention; AUTOMATIC data collection systems; CONDOMSITALY