Fig. 1: Study selection.

Flow chart demonstrating the process of the literature review, showing the number of citations remaining and removed at each stage. Citations removed at the eligibility assessment stage are sorted by reason for elimination. The number of included studies reporting on each perinatal outcome for each exposure comparison are given. ARVs Antiretroviral drugs, cART Combination antiretroviral therapy, HIV Human immunodeficiency virus, LBW Low birthweight, NND Neonatal death, PTB Preterm birth, SGA Small for gestational age, VLBW Very low birthweight, VPTB Very preterm birth, VSGA Very small for gestational age, WLHIV Women living with HIV. See Methods for definitions of perinatal outcomes.