(Q52278624)
Statements
Patterns of cannabis use, abuse and dependence over time: incidence, progression and stability in a sample of 1228 adolescents. (English)
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Perkonigg A
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Lieb R
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Höfler M
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Schuster P
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Sonntag H
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1 November 1999
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94
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11
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1663-1678
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