Cannabis Use, Polysubstance Use, and Psychosis Spectrum Symptoms in a Community-Based Sample of U.S. Youth – Journal of Adolescent Health 2017-09-13 Leave a Comment on Cannabis Use, Polysubstance Use, and Psychosis Spectrum Symptoms in a Community-Based Sample of U.S. Youth – Journal of Adolescent Health To examine how cannabis use and polysubstance use among cannabis users relate to psychosisspectrum (PS) symptoms in a large community-based sample of U.S. youth. Source: Cannabis Use, Polysubstance Use, and Psychosis Spectrum Symptoms in a Community-Based Sample of U.S. Youth – Journal of Adolescent Health