The AAFP recommends that all women planning or capable of pregnancy take a daily supplement containing 0.43 to 0.8 mg (400 to 800 µg) of folic acid. (2009)
(Grade: A recommendation)
Grade Definition: http://www.uspreventiveservicestaskforce.org/uspstf/grades.htm(www.uspreventiveservicestaskforce.org)
Clinical Considerations: http://www.uspreventiveservicestaskforce.org/uspstf/uspsnrfol.htm(www.uspreventiveservicestaskforce.org)
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Neural Tube Defects