We will measure serum ferritin and soluble transferrin receptor in maternal serum, which will be adjusted for inflammation (C-reactive protein (CRP) and alpha-1-acid glycoprotein (AGP)) as recommended by WHO and Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia.23, 25 Serum hepcidin will be measured using validated competitive ELISA.26 This evidence concerns the gene CRP and anemia.