title: [Neural tube defects and congenital hydrocephalus. Why is prevalence important?].
mesh_terms: D005492:Folic Acid / Q000627:therapeutic use; D006801:Humans; D006849:Hydrocephalus / Q000453:epidemiology* / Q000517:prevention & control; D007231:Infant, Newborn; D009436:Neural Tube Defects / Q000453:epidemiology* / Q000517:prevention & control; D015995:Prevalence
chemical_list: D005492:Folic Acid