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. 2011 Jun 10;6(6):e20482. doi: 10.1371/journal.pone.0020482

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Molinaro et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Percentage differences in LY and frequent cannabis use prevalence, in perceived cannabis availability prevalence and percentage differences in street price of cannabis.