case_images: PMC3285516_01
case_images: Number of individuals participants knew who regularly provided or obtained methadone illegally.
case_images: 1477-7517-9-3-1.jpg
case_images: PMC3285516_01_1477-7517-9-3-1.jpg
case_images: F1
case_images: For both obtaining and providing methadone more than three in ten participants said they knew more than five people who engaged in this activity at least once a month (Figure 1).