About the Authors

Ulrich Frick

Affiliations Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany, Döpfer University of Applied Sciences, Department of Psychology, Cologne, Germany, Research Institute on Public Health and Addiction, University of Zurich, Zurich, Switzerland

Hannah Frick

Affiliation Department of Statistics, Universität Innsbruck, Innsbruck, Austria

Berthold Langguth

Berthold.Langguth@medbo.de

Affiliation Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany

Michael Landgrebe

Affiliations Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany, Department of Psychiatry, Psychosomatics, and Psychotherapy, Sozialstiftung Bamberg, Bamberg, Germany

Bettina Hübner-Liebermann

Affiliation Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany

Göran Hajak

Affiliations Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany, Department of Psychiatry, Psychosomatics, and Psychotherapy, Sozialstiftung Bamberg, Bamberg, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: UF HF ML BL GH. Performed the experiments: UF BH-L ML BL GH. Analyzed the data: UF HF. Wrote the paper: UF HF BL ML GH.