TY - JOUR A1 - Trussell, J. A1 - Vaughan, B. A1 - Stanford, J. T1 - Are All Contraceptive Failures Unintended Pregnancies? Evidence From the 1995 National Survey of Family Growth Y1 - 1999 JF - Family Planning Perspectives VL - 31 IS - 5 SP - 246 EP - -247+260 ER -