Brain opioid receptor binding in early abstinence from opioid dependence: Positron emission tomography study
The British Journal of Psychiatry (2007) 191: 63-69
http://bjp.rcpsych.org/cgi/content/abstract/191/1/63?etoc
Tim M. Williams et al.
"This study sought to examine changes in opioid receptor availability in early abstinence from opioid dependence."
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