1. State-specific pregnancy and birth rates among teenagers—United States 1991–1992;MMWR,1995
2. Youth risk behavior surveillance— United States, 1995;MMWR CDC Surveill Summ,1996
3. Sexually Transmitted Disease Surveillance,1996
4. Consequences of teenage pregnancy and motherhood;Simkins;Adolescence,1984
5. Why pregnant adolescents say they did not use contraceptives prior to conception;Stevens-Simon;J Adolesc Health,1996