Abortion surveillance in the United States.
D000028:Abortion, Induced / Q000379:methods; D000029:Abortion, Legal; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D044383:Black People; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008393:Marriage; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D014481:United States; D014619:Vacuum Curettage; D044465:White People; D001741:Black or African American