Cite
HARVARD Citation
Topp, L. et al. (2013). Relative efficacy of cash versus vouchers in engaging opioid substitution treatment clients in survey-based research. Journal of medical ethics. 39 (4), pp. 253-256. [Online].
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Topp, L. et al. (2013). Relative efficacy of cash versus vouchers in engaging opioid substitution treatment clients in survey-based research. Journal of medical ethics. 39 (4), pp. 253-256. [Online].