50 Years Ago in T J P

O’Brien RT, Pearson HA. Physiologic anemia of the newborn infant. J Pediatr 1971;789:132-8. In The Journal 50 years ago, O'Brien and Pearson wrote an overview about the physiological changes in blood hemoglobin values the first weeks and months of life in infants born at term and preterm. In infants born at term, they describe a drop in hemoglobin values toward a nadir at 6-8 weeks, explained by hemodilution and decreased production and...