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There are growing concerns over the high rate of electronic cigarette (e-cigarette) use and decreases in perceived harm of marijuana use among youth. We seek to identify risk factors associated with e-cigarette and marijuana use among U.S. middle and high school students.Estimates of e-cigarette use only, marijuana use only, dual use of both substances as well as frequency of substance use were calculated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.