Periconceptional Folic Acid Exposure and Risk of Occurrent Neural Tube Defects
Werler, Martha M., Shapiro, Samuel, Mitchell, Allen A.Volume:
48
Journal:
Obstetrical & Gynecological Survey
DOI:
10.1097/00006254-199308000-00005
Date:
August, 1993
File:
PDF, 232 KB
1993