Shaffer, Paige M., David Smelson, Abigail Helm, Ayorkor Gaba, Sarah Marcus, and Howard J. Shaffer. “Reentry Service Engagement Among a Reentry Population With Co-Occurring Mental Health and Opioid Use Disorders in Massachusetts Jails”. Journal of Psychology and Psychotherapy Research 10 (November 28, 2023): 85–96. Accessed May 2, 2025. https://savvysciencepublishers.com/index.php/jppr/article/view/957.