Figur 7: Skøn over den årlige prævalens af problematisk opioidbrug (tilfælde pr. 1 000 indbyggere i alderen 15-64 år)
Figure 7: Estimates of the annual prevalence of problem opioid use ( casesper1000 population aged 15–64) illegally produced fentanyl in Estonia, points to the need to monitor more closely the availability of synthetic opioids such as fentanyl (which is considerably more potent than heroin).