Medical Research Council Vitamin Study.
D035061:Control Groups; D006805:Human Experimentation; D006801:Humans; D007391:International Cooperation; D038622:Internationality; D009436:Neural Tube Defects; D009747:Nutritional Physiological Phenomena; D018579:Patient Selection; D011247:Pregnancy; D037841:Pregnant People; D015995:Prevalence; D011315:Preventive Medicine; D011897:Random Allocation; D012107:Research Design; D035842:Research Subjects; D012306:Risk; D018570:Risk Assessment; D006113:United Kingdom; D014815:Vitamins
Biomedical and Behavioral Research; Medical Research Council