Assistant manager Dunn Ericson refilled a jar of medical marijuana at the River Rock Medical Marijuana Center in Denver, Colorado, on May 16, 2013.
Assistant manager Dunn Ericson refilled a jar of medical marijuana at the River Rock Medical Marijuana Center in Denver, Colorado, on May 16, 2013. (Anthony Souffle/Chicago Tribune/MCT)
Assistant manager Dunn Ericson refilled a jar of medical marijuana at the River Rock Medical Marijuana Center in Denver, Colorado, on May 16, 2013. (Anthony Souffle/Chicago Tribune/MCT)

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