Lawala, P. S., Akiba, C. F., Kabwali, D. L., Ndelwa, L. A., Mwamboneke, B. E., Kalolo, A. (2025). Barriers to implementing contingency management at a methadone treatment clinic: A qualitative study at a tertiary hospital in Tanzania. PLoS ONE. https://doi.org/10.1371/journal.pone.0314168