Text and Data Mining valid from 2018-03-27
Received: 26 May 2017
Accepted: 2 March 2018
First Online: 27 March 2018
Ethics approval and consent to participate
: The Ethics Review Committee of the Medical Centre – University of Freiburg approved the study protocol as well as study procedures and materials (288/15). All potential participants received information on the study and a questionnaire by post. The study was conducted with full anonymity and voluntary participation. Consent to participate was granted by returning the questionnaire. This approach was explained in detail within the study information. Based on the results of the diagnostic approach presented above, an overseeing medical adviser (LTvE) had concluded that all participants were capable of providing ethical consent for their participation.
: Not applicable.
: The authors declare that they have no competing interests.
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