TY - JOUR A1 - Santelli, J. A1 - Abma, J. A1 - Ventura, S. A1 - Lindberg, L. A1 - Morrow, B. A1 - Anderson, J. T1 - Can changes in sexual behaviors among high school students explain the decline in teen pregnancy rates in the 1990s? Y1 - 2004 DO - 10.1111/j.1728-4465.2010.00250.x JF - Studies in Family Planning VL - 41 ER -