Funding for this research was provided by:
Stiftung Wohlfahrtspflege NRW-Germany (68430)
Article History
Received: 10 September 2019
Accepted: 23 August 2020
First Online: 7 September 2020
Change Date: 8 December 2020
Change Type: Update
Change Details: Open Access Funding note was added to backmatter text of the article. This article has been updated to correct this.
Ethics approval and consent to participate
: The project was submitted to the ethics committee “Ethikkommission der Deutschen Gesellschaft für Pflegewissenschaft “on 2 December 2016. The project was examined and finally approved on 31 January 2017 (Number: 16–27). Prior to obtaining written consent, information had to be given to all the study participants in written form. Compliance with the established rules of the RCC was continuously monitored by the German Center for Neurodegenerative Diseases (Deutsches Zentrum für Neurodegenerative Erkrankungen, DZNE) Witten.
: Not applicable.
: The authors declare no conflicts of interest.