Concentrations of unmetabolized folic acid and primary folate forms in pregnant women at delivery and in umbilical cord blood

Effect of Supplemental Folic Acid in Pregnancy on Childhood Asthma: A Prospective Birth Cohort Study

(2009) M. J. Whitrow et al.   AMERICAN JOURNAL OF EPIDEMIOLOGY

Persistent circulating unmetabolised folic acid in a setting of liberal voluntary folic acid fortification. Implications for further mandatory fortification?

(2009) Mary R Sweeney et al.   BMC PUBLIC HEALTH

Quantification of key folate forms in serum using stable-isotope dilution ultra performance liquid chromatography–tandem mass spectrometry

(2009) Susanne H. Kirsch et al.   JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES

The extremely slow and variable activity of dihydrofolate reductase in human liver and its implications for high folic acid intake

(2009) S. W. Bailey et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA

Folic acid supplements in pregnancy and early childhood respiratory health

(2008) S E Haberg et al.   ARCHIVES OF DISEASE IN CHILDHOOD

Not all cases of neural-tube defect can be prevented by increasing the intake of folic acid

(2008) Helmut B. Heseker et al.   BRITISH JOURNAL OF NUTRITION

A 19-Base Pair Deletion Polymorphism in Dihydrofolate Reductase Is Associated with Increased Unmetabolized Folic Acid in Plasma and Decreased Red Blood Cell Folate

(2008) Renee D. Kalmbach et al.   JOURNAL OF NUTRITION