title: Do vitamins prevent neural tube defects (and can we find out ethically)?
mesh_terms: D002986:Clinical Trials as Topic; D035061:Control Groups; D026689:Ethical Analysis; D026822:Ethicists; D004992:Ethics, Medical; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009436:Neural Tube Defects / Q000517:prevention & control*; D018579:Patient Selection; D011247:Pregnancy; D037841:Pregnant People; D035842:Research Subjects; D018570:Risk Assessment; D014815:Vitamins / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D014815:Vitamins