Cognitive impairment in methadone maintenance patients
Department of Psychiatry and Behavioral Sciences, Behavioral Biology Research Center, Johns Hopkins University School of Medicine, 5510 Nathan Shock Drive, Baltimore, MD 21224, USA
Received 24 October 2001; received in revised form 14 January 2002; accepted 21 January 2002.
PII: S0376-8716(02)00013-3
© 2002 Elsevier Science Ireland Ltd. All rights reserved.
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