Fig. 2: Violin plots for measures (ng/mL) of erythroferrone (ERFE) at four time points during the first year of life.
From: Normal range and predictors of serum erythroferrone in infants

Three groups are compared; breastfed normal birth weight controls (NBW) and low birth weight (LBW) infants supplemented with placebo or 2 mg/kg/day of iron between 6 weeks and 6 months of age. Horizontal line represents median.