00000nam a2200000 a 4500 Ferris, Jason Maier, Larissa J. Barratt, Monica Winstock, Adam Zahlen & Fakten Studie Drogen Global Drug Survey 2019 Prepared by the GDS Core Research Team. Power-Point-Präsentation, May 16, 2019 2019 o.A. W:\Digitale Publikationen\Sucht\Suall\00478151_GloablDrugSurvey2019KeyFindingsReportPPP.pdf Global Drug Survey, London 202 S.