Funding for this research was provided by:
German Pension Insurance (0421/40-64-50-47)
Text and Data Mining valid from 2019-12-01
Received: 7 August 2019
Accepted: 17 October 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: This study received approval from the independent Ethics Commission of the Medical Faculty of Friedrich-Alexander-University Erlangen-Nürnberg (No. 182_16B). The participants provided a written declaration of consent before participating in the focus-group discussions.
: Not applicable.
: The authors declare that they have no competing interests.