title: Changes in MTHFR genotype frequencies over time.
authors.forename: A S
authors.initials: AS
authors.lastname: Whitehead
mesh_terms: D000328:Adult; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage / Q000009:adverse effects; D005787:Gene Frequency / Q000235:genetics*; D005828:Genetics, Population; D005838:Genotype; D006801:Humans; D008297:Male; D042965:Methylenetetrahydrofolate Reductase (NADPH2); D000587:Oxidoreductases Acting on CH-NH Group Donors / Q000235:genetics*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D013030:Spain
chemical_list: D005492:Folic Acid; D000587:Oxidoreductases Acting on CH-NH Group Donors; D042965:Methylenetetrahydrofolate Reductase (NADPH2)