| Hans-Günter Meyer-Thompson | Verschiedene
Problematic khat use as a possible risk factor for harmful use of other psychoactive substances: a mixed method study in Ethiopia
Problematic khat use as a possible risk factor for harmful use of other psychoactive substances: a mixed method study in Ethiopia
Awoke Mihretu, Solomon Teferra and Abebaw Fekadu
Substance Abuse Treatment, Prevention, and Policy, 2017, 12:47, doi.org/10.1186/s13011-017-0132-3
https://substanceabusepolicy.biomedcentral.com/articles/10.1186/s13011-017-0132-3