RT Journal Article SR Electronic T1 Plasma and erythrocyte folate concentrations in normal mature infants. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 743 OP 745 DO 10.1136/adc.48.9.743 VO 48 IS 9 A1 Hibbard, E D YR 1973 UL http://adc.bmj.com/content/48/9/743.abstract AB