Effects of experimental Unemployment, Employment and Punishment analogs on opioid seeking and consumption in heroin-dependent volunteers
Substance Abuse Research Division, Department of Psychiatry and Behavioral Neurosciences, Wayne State University, 2761 East Jefferson Ave., Detroit, MI 48207, USA
Received 16 December 2009; received in revised form 25 March 2010; accepted 25 March 2010.
PII: S0376-8716(10)00159-6
doi:10.1016/j.drugalcdep.2010.03.020
© 2010 Elsevier Ireland Ltd. All rights reserved.
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