title: Prison optics.
mesh_terms: D002170:Canada; D035082:Federal Government; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D009294:Narcotics / Q000627:therapeutic use; D009293:Opioid-Related Disorders / Q000534:rehabilitation; D011330:Prisons / Q000706:statistics & numerical data*; D013219:State Government; D019966:Substance-Related Disorders / Q000453:epidemiology* / Q000534:rehabilitation
chemical_list: D009294:Narcotics; D008691:Methadone