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International Journal of Drug Policy > 2014 > 25 > 5 > 836-844
Journal of Behavioral Medicine > 2014 > 37 > 6 > 1047-1056
International Journal of Drug Policy > 2014 > 25 > 5 > 836-844
Journal of Behavioral Medicine > 2014 > 37 > 6 > 1047-1056