@article{Heil2011,
author = {Heil, S.H. and Jones, H.E. and Arria, A. and Kaltenbach, K. and Coyle, M. and Fischer, G. and Stine, S. and Selby, P. and Martin, P.R. },
title= {Unintended pregnancy in opioid-abusing women},
year = {2011},
doi = {10.1016/j.jsat.2010.08.011},
journal = {Journal of Substance Abuse Treatment },
volume = {40},
number = {2},
pages = {199--202},
}