Fig. 1: Trial profile.

The study included 45 normal birth weight (NBW) breastfed infants originally participating as a reference group in the randomized trial LIME¹⁴ and 136 low birth weight (LBW) infants originally randomized to receive iron (2 mg/kg/day, n = 58) or placebo (n = 78) in the randomized controlled trial JOHN.¹⁵