Periconceptional intake of vitamin A among women and risk of neural tube defect-affected pregnancies.
Shaw
G M
GM
California Birth Defects Monitoring Program, Emeryville, California 94608, USA.
Velie
E M
EM
Schaffer
D
D
Lammer
E J
EJ
D002140:California / Q000453:epidemiology; D016022:Case-Control Studies; D005260:Female; D005306:Fertilization; D006801:Humans; D007231:Infant, Newborn; D009436:Neural Tube Defects / Q000453:epidemiology / Q000209:etiology*; D016017:Odds Ratio; D011247:Pregnancy; D012307:Risk Factors; D014801:Vitamin A / Q000008:administration & dosage* / Q000009:adverse effects*
D014801:Vitamin A