.. | ||
emphasis-needed-both-prevention-treatment | ||
heroin-use-driven-by-its-low-cost-high-availability | ||
heroin-use-rare-in-prescription-drug-users | ||
increased-drug-availability-associated-increased-use-overdose | ||
prescription-opioid-use-risk-factor-heroin-use | ||
rx-opioids-heroin-have-similar-effects-different-risk-factors | ||
subset-users-may-naturally-progress-rx-opioids-to-heroin |