Text and Data Mining valid from 2019-10-24
Received: 25 September 2018
Accepted: 30 September 2019
First Online: 24 October 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of the Medical Faculty of the University of Duisburg-Essen (reference number: 13–5536-BO, date of approval: 11/24/2014). All participants received written information and signed informed consent forms, which are stored at the institute.
: All general practitioners and practice assistants provided informed consent for the pseudonymized analysis and publication of data assessed during the study.
: The authors declare that they have no competing interests.