In the Sample and procedure subsection of the Methods, there is an error in the first sentence of the first paragraph. The correct sentence is: The ESA is regularly conducted by the Institute for Therapy Research (IFT Institut für Therapieforschung).
Information is missing from the Acknowledgments. The correct Acknowledgments are as follows: We thank the IFT Institut für Therapieforschung for providing the data for this analysis.
There are errors in the Funding statement. The correct Funding statement is as follows: The 2015 Epidemiological Survey of Substance Abuse (ESA) was supported by funding from the German Federal Ministry of Health (project no. IIA5 –2514DSM200).
1