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Article History

Received: 28 May 2018

Accepted: 22 April 2019

First Online: 25 June 2019

Ethics approval and consent to participate

: This study was approved on 13.09.2016 by the Ethics Committee of the Friedrich-Alexander-Universität Erlangen-Nürnberg (ref. nr. 260_16 B, 13.09.2016). A written consent was obtained by all participants.

: Not applicable.

: In the past 3 years, RCK received support for his epidemiological studies from Sanofi Aventis; was a consultant for Johnson & Johnson Wellness and Prevention, Sage Pharmaceuticals, Shire, Takeda; and served on an advisory board for the Johnson & Johnson Services Inc. Lake Nona Life Project. Kessler is a co-owner of DataStat, Inc., a market research firm that carries out healthcare research. The other authors declare that they have no competing interests. DDE reports to have received consultancy fees or served in the scientific advisory board from several companies such as Minddistrict, Sanofi, Lantern, Schön Kliniken, German health insurance companies (BARMER and Techniker Krankenkasse), and chambers of psychotherapists.MB and DDE are stakeholders of the “Institute for Online Health Trainings”, a company aiming to transfer scientific knowledge related to the present research into routine health care. HB reports to have received consultancy fees and fees for lectures or workshops from chambers of psychotherapists and training institutes for psychotherapists.FK, TB, AS, PC, RB, RPA declare that they have no competing interests.

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