TY - JOUR A1 - Lippold, K.M. A1 - Jones, C.M. A1 - O.’Malley Olsen, E. A1 - Giroir, B.P. T1 - Racial/ethnic and age group differences in opioid and synthetic opioid–involved overdose deaths among adults aged≥ 18 years in metropolitan areas – United States, 2015–2017 Y1 - 2019 DO - 10.15585/mmwr.mm6843a3 VL - 68 IS - 43 ER -