White supremacy or white supremacism is a racist ideology centered upon the belief, and promotion of the belief, that white people are superior in certain characteristics, traits, and attributes to people of other racial backgrounds and that therefore white people should politically, economically and socially rule non-white people.
Neural tube defects occur when the bones of the spine do not correctly form, leaving the spinal cord and its nerves and coverings to protrude out through the skin (or lie just beneath it). The use of folate vitamins during pregnancy has decreased the incidence of neural tube defects.
Many doctors feel in cases of stroke ( which account for most causes on medical records), the time it happens would be before 13 weeks gestation and account most neural tube defects on folic acid deficiency. But the fact remains, we have a long road to understand Schizencephaly.