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07-01-2008, 04:37 AM
In a major survey of 17 countries, it was found that the United States has the highest levels of cocaine and cannabis use. These results, based on the World Health Organization's (WHO) Composite International Diagnostic Interview (CIDI) was released on June 30, 2008 in the open access journal PLoS Medicine.
More... (http://www.medicalnewstoday.com/articles/113186.php)
More... (http://www.medicalnewstoday.com/articles/113186.php)