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, J. B., 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