TY - JOUR A1 - Crosby, R.A. A1 - DiClemente, R.J. A1 - Wingood, G.M. A1 - Davies, S.L. A1 - Harrington, K. T1 - Adolescents’ ambivalence about becoming pregnant predicts infrequent contraceptive use: A prospective analysis of non-pregnant African American females Y1 - 2002 DO - 10.1067/mob.2002.120081 JF - American Journal of Obstetrics and Gynecology VL - 186 IS - 2 ER -