1. Degenhardt, L., Whiteford, H. A., Ferrari, A. J., Baxter, A. J., Charlson, F. J., Hall, W. D., et al. (2013). Global burden of disease attributable to illicit drug use and dependence: Findings from the global burden of disease study 2010. The Lancet, 382(9904), 1564–1574.
2. European Monitoring Centre for Drugs and Drug Addiction. (2016). European Drug Report 2016: Trends and Developments. Luxembourg: Publications Office of the European Union.
3. Degenhardt, L., & Hall, W. (2012). Extent of illicit drug use and dependence, and their contribution to the global burden of disease. The Lancet, 379(9810), 55–70.
4. European Monitoring Centre for Drugs and Drug Addiction. (2016). Hospital emergency presentations and acute drug toxicity in Europe: Update from the Euro-DEN Plus research group and the EMCDDA. Luxembourg: Publications Office of the European Union.
5. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders, Fourth Edition (DSM-IV). Washington, DC: American Psychiatric Association.