Digitally delivered contingency management during methadone treatment for people with co-occurring cocaine and opioid use: a protocol for a randomized controlled trial.

Alexander K., Sharma A., Fletcher JB., Smith, Z., Huddleston, T., Gryczynski, J., & Stitzer, M. (2025). Digitally delivered contingency management during methadone treatment for people with co-occurring cocaine and opioid use: a protocol for a randomized controlled trial. Frontiers in Psychiatry, 16, 1576277. https://doi.org/10.3389/fpsyt.2025.1576277