Document is current

Article History

Received: 9 May 2018

Accepted: 30 November 2018

First Online: 13 December 2018

Ethics approval and consent to participate

: Ethics consent was requested from the Ethics Committee of the Berlin General Medical Council and from Ethics Committees of the other participating federal states (Ethik-Kommission der Landesärztekammer Brandenburg, Ethik-Kommission der Ärztekammer Niedersachsen, Ethik-Kommission der Landesärztekammer Hessen). As the study coordinators had no direct contact with participants of this study, and as the survey was fully anonymous, the Committees approved the study design from an ethical point of view without full board review. Due to the fact that the research involved no risk and no identifiable private information, the request to obtain a signed consent from participants had been waived in conformity with the CIOMS International Ethics Guidelines [].

: Not applicable.

: The authors declare that they have no competing interests. ID was involved in this work during her master thesis at the German Federal Institute for Risk Assessment (BfR). She left the BfR in 2016 and is now working at the Federal Research Institute of Nutrition and Food (Max Rubner-Institut; MRI). The MRI had no involvement in the interpretation or reporting of the results of the current manuscript. Thus, the content and views expressed in this publication do not necessarily represent the decisions, policy or views of the MRI.

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