Comparison of national policies on periconceptional use of folic acid to prevent spina bifida and anencephaly (SBA)
- PMID: 9143094
- DOI: 10.1002/(SICI)1096-9926(199702)55:2<134::AID-TERA3>3.0.CO;2-3
Comparison of national policies on periconceptional use of folic acid to prevent spina bifida and anencephaly (SBA)
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