1. Abortion surveillance—United States, 1996;Koonin;MMWR,1999
2. Unintended pregnancy in the United States;Henshaw;Fam Plann Perspect,1998
3. The incidence of abortion worldwide;Henshaw;Int Fam Plann Perspect,1999
4. Therapeutic abortions,1995
5. From the patient’s perspective,1999