Text and Data Mining valid from 2018-10-25
Received: 2 February 2018
Accepted: 16 October 2018
First Online: 25 October 2018
Ethics approval and consent to participate
: An ethical approval was not obtained because criteria for the need of an ethical statement were not met (risk for the respondents, lack of information about the aims of the study, examination of patients). However, the German Council of Science and Humanities (Wissenschaftsrat) evaluated the German Socio-Economic Panel (GSOEP) at the Deutsches Institut für Wirtschaftsforschung, (DIW), Berlin. The German Council of Science and Humanities approved the GSOEP. The GSOEP is in accordance with the Helsinki Declaration as revised in 2008.Informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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