Web-based screening and brief intervention for poly-drug use among teenagers: study protocol of a multicentre two-arm randomized controlled trial
2019 ◽
Vol 43
(10)
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pp. 2196-2202
2009 ◽
Vol 169
(16)
◽
pp. 1508
◽
2008 ◽
Vol 168
(5)
◽
pp. 530
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