Psychosocial functioning and cocaine use during treatment: Strength of relationship depends on type of urine-testing method
Clinical Pharmacology and Therapeutics Branch, Treatment Section, Intramural Research Program (IRP), National Institute on Drug Abuse (NIDA), NIH/DHHS, 5500 Nathan Shock Drive, Baltimore, MD 21224, USA
Received 22 February 2007; received in revised form 2 May 2007; accepted 22 May 2007.
PII: S0376-8716(07)00220-7
doi:10.1016/j.drugalcdep.2007.05.018
Published by Elsevier Inc.
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