Olla P, Abumeeiz M, Elliott L, Foote R, Lee-Daigle M, Bartol S, et al. Observational study of visual testing efficacy in detecting cannabis usage. JCSWB [Internet]. 2021 Jun. 16 [cited 2024 Apr. 19];6(2):83-92. Available from: https://www.journalcswb.ca/index.php/cswb/article/view/176