From the Centers for Disease Control and Prevention. Differences in maternal mortality among black and white women--United States, 1990.
D001741:Black or African American / Q000706:statistics & numerical data*; D005260:Female; D006297:Health Services Accessibility; D006801:Humans; D008428:Maternal Mortality / Q000639:trends*; D014481:United States / Q000453:epidemiology; D044465:White People / Q000706:statistics & numerical data