Figure 2From: Birth weight for gestational age norms for a large cohort of infants born to HIV-negative women in Botswana compared with norms for U.S.-born black infants Percentile curves for birth weights among babies born to HIV-uninfected women in Botswana, by gestational age. Percentiles using a B-spline with knots at 24, 26,28,38,40,44 weeks. Actual birth weight data plotted.Back to article page