Article History
Received: 19 December 2017
Accepted: 9 January 2018
First Online: 3 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Local ethics committee approval was not required for the studies that only included surveys. Surveys are common used research tools and the technique itself received ethical approval several times. Participants were asked about their eating behaviour, and questions like these are not supposed to cause any harm to adult human beings. Even in the very unlikely case that participants felt uneasy while answering the questions, they could easily cancel the survey at any time without any disadvantages. Participants were informed that their participation is voluntary and anonymous, and that their data is handled according to privacy policy. Furthermore, participants knew that they could cancel the survey any time by not completing the questionnaire or not sending their data using the “send-button”. With sending their data, they agreed to participate in the study. All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.