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Archived from the original on February 20, 2013

"Ontario set to ban cigarette display cases"

As described by a US Department of Agriculture report: 5 counties growing burley tobacco (left) are concentrated west of the Blue Ridge, and counties growing flue-cured tobacco (right) are concentrated east of the Blue Ridge Source: National Agricultural Statistics Service Burley is a dark leaf grown primarily in Kentucky and Tennessee, plus some southwestern Virginia counties (and starting in the 1990's, in Piedmont counties as well)

Here we used the North American Prodrome Longitudinal Study-2, a multisite prospective study of individuals at clinical high risk for psychosis (CHR), and healthy controls to examine baseline differences in psychiatric symptoms and conversion to psychosis across substance groups: (1) CHR tobacco use, (2) CHR cannabis use, (3) CHR co-use, (4) CHR non-tobacco or cannabis use, (5) CHR without substance use and (6) healthy controls