@article{fb66336c4fca42c287f5d74b9847ed46,
title = "Crack cocaine trajectories among users in a midwestern American city",
keywords = "Abstinence, Addiction, Cocaine, Comorbidity, Crack cocaine, Drug dependence, DSM-IV disorders, Group-based modeling, Natural history, Substance abuse",
author = "Falck, {Russel S.} and Jichuan Wang and Carlson, {Robert G.}",
year = "2007",
month = sep,
doi = "10.1111/j.1360-0443.2007.01915.x",
language = "English",
volume = "102",
pages = "1421--1431",
journal = "Addiction",
issn = "0965-2140",
number = "9",
}