Columbia subject headings:
Abortion--Moral and ethical aspects--United States.
Dilatation and extraction abortion--Law and legislation--United States.
Harvard subject headings:
Abortion--Moral and ethical aspects--United States
Dilatation and extraction abortion--Law and legislation--United States.
Princeton subject headings:
Abortion--Moral and ethical aspects--United States.
Dilatation and extraction abortion--Law and legislation--United States.