@article{755059a471db4731a2b1a1bfbf0381ed,
title = "The validity of injection drug users self-reported use of opiates and cocaine",
keywords = "crack cocaine use, injection drug use",
author = "Russel Falck and Siegal, \{Harvey A.\} and Forney, \{Mary Ann\} and Jichuan Wang and Carlson, \{Robert G.\}",
year = "1992",
month = oct,
day = "1",
doi = "10.1177/002204269202200402",
language = "English",
volume = "22",
pages = "823--832",
journal = "Journal of Drug Issues",
issn = "0022-0426",
number = "4",
}