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. 2011 Apr 21;6(4):e18440. doi: 10.1371/journal.pone.0018440

Figure 2. Perceived effects of cannabis self-administration.

Figure 2

Note: Perceived benefits of cannabis recorded by patients on a range of symptoms using 100-mm VAS scales before and at 2 hours of cannabis consumptions. Grey bars: pre-cannabis; black bars: post-cannabis. * * = p<0.001; * = p<0.05.