@article{Forrest1994,
author = {Forrest, J.D. },
title= {Epidemiology of Unintended Pregnancy and Contraceptive Use},
year = {1994},
doi = {10.1016/S0002-9378(94)05008-8},
journal = {American Journal of Obstetrics and Gynecology },
volume = {170},
pages = {1485--1489},
}