AUTHOR=Ally Dilara , Tobiasz-Veltz Laure , Tu Kevin , Comeau Alexandra , Bumpus Clare , Blot Tori , Rice Fiona Kate , Orr Brian , Soumerai Rea Hanna , Sweezy Martha , Schuman-Olivier Zev TITLE=A pilot study of an online group-based Internal Family Systems intervention for comorbid posttraumatic stress disorder and substance use JOURNAL=Frontiers in Psychiatry VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2025.1544435 DOI=10.3389/fpsyt.2025.1544435 ISSN=1664-0640