Article

Wiessing, Lucas and Augustin, R and Uhl, Alfred and Kummler, P and Kraus, L and Frischer, Martin (2003) Estimating prevalence of problem drug use at national level in countries of the European Union and Norway. Addiction, 98, (4), pp. 471-485. https://doi.org/10.1046/j.1360-0443.2003.00326.x.