Röhrig, Gabriele
Pia, Schmidt
Bussmann, Michael
Kunter, Henning
Noack, Michael Johannes
Barbe, Anna Greta
Article History
Received: 20 November 2019
Accepted: 28 February 2020
First Online: 13 March 2020
Compilance with ethical standards
:
: The authors state that there is no relevant conflict of interest related to this study.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The University of Cologne local ethics review board (study number: 17-389, date of issue: 11/27/2017) granted approval for the study.
: Written consent was obtained from each study participants prior to the beginning of the study.