Relationship between online-learning self-efficacy and risk for psychological distress and harmful substance use in South African university students by Henning, Tiffany Joy

Subjects: “…marijuana…”
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The impact of cannabis and methamphetamine use on clinical and functional aspects of outcome in first-episode Schizophrenia patients : a longitudinal study by Scheffler, Frederika

Subjects: “…Marijuana abuse -- Risk factors…”
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