AUTHOR=Ahmed Saeed , Sarfraz Zouina , Sarfraz Azza TITLE=Editorial: A Changing Epidemic and the Rise of Opioid-Stimulant Co-Use JOURNAL=Frontiers in Psychiatry VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2022.918197 DOI=10.3389/fpsyt.2022.918197 ISSN=1664-0640