Received: 14 April 2019
Accepted: 12 August 2019
First Online: 22 August 2019
Ethics approval and consent to participate
: On ethic approval, the ethics committee of Witten / Herdecke University adjudicated that there were “no ethical or professional concerns” regarding the implementation of this study on 29th August 2016 (No. 120/2016). All interview partners involved in the study took part voluntarily and agreed to the publication of the data in an anonymous form. The welfare and protection of the participants were guaranteed by respecting their rights, privacy, dignity, and sensitivities. The Helsinki declaration was adhered to including, but not limited to the anonymity of participants being guaranteed and written informed consent of participants being obtained.
: Not applicable, because no individual data of our participants was used.
: The authors declare that they have no competing interests.