Refine your search
Availability
-
Authors
-
Topics
- 5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase
- Administration, Oral
- Adolescent
- Adult
- Aged
- Amniocentesis
- Amniotic Fluid
- Carbon Isotopes
- Case-Control Studies
- Cystathionine beta-Synthase
- Cysteine
- Double-Blind Method
- Female
- Folic Acid
- Homocysteine
- Humans
- Neural Tube Defects
- Pregnancy
- Vitamin B 12
- blood
- Show more
- Show less
-
Languages