A difference‐in‐difference approach to examining the impact of cannabis legalization on disparities in the use of cigarettes and cannabis in the United States, 2004‐2017
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1994 ◽
Vol 25
(2)
◽
pp. 207-221
◽
2011 ◽
Vol 42
(1)
◽
pp. 59-76
◽
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