1. Racial/ethnic differences in trends in heroin use and heroin-related risk behaviors among nonmedical prescription opioid users Martins, Silvia S.; Santaella Tenorio, Julian; Marshall, Brandon D. L.; Martinez, Adriana Maldonado; Cerdá, Magdalena 2015 Articles EpidemiologyMedication abuseOpioidsOpioid abuseHeroinHeroin abuseHealth and race