Figure 1From: Birth outcomes in South African women receiving highly active antiretroviral therapy: a retrospective observational studyFlow diagram of study population. HAART - highly active antiretroviral treatment; early HAART was defined as initiation before 28 weeks of pregnancy and late HAART as initiation at ≥28 weeks of pregnancy; PI-based HAART - protease inhibitor-based HAART; EFV-based HAART - efavirenz-based HAART; NVP-based HAART - nevirapine-based HAART.Back to article page