1. Abortion surveillance — United States, 2000;Elam-Evans;MMWR Surveill Summ,2003
2. Statistical abstract of the United States: 2004/2005;US Census Bureau,2004
3. Risk factors for legal induced abortion-related mortality in the United States;Bartlett;Obstet Gynecol,2004
4. The accessibility of abortion services in the United States, 2001;Henshaw;Perspect Sex Reprod Health,2003
5. Stenberg, Attorney General of Nebraska, et al. v. Carhart, no. 99-830, June 28, 2000.