Lodde, M. F.
Raschke, M. J.
Stolberg-Stolberg, J.
Everding, J.
Rosslenbroich, S.
Katthagen, J. C.
Funding for this research was provided by:
Projekt DEAL
Article History
Received: 13 October 2020
Accepted: 1 January 2021
First Online: 23 January 2021
Compliance with ethical standards
:
: The authors declare that they have no known competing financial interests, non-financial interests or personal relationships that could have appeared to influence the work reported in this paper. The authors did not receive support from any organisation for the submitted work. No funding was received to assist with the preparation of this manuscript. No funding was received for conducting this study. No funds, grants, or other support was received. The authors have no relevant financial or non-financial interests to disclose. The authors have no conflicts of interest to declare that are relevant to the content of this article. All the authors certify that they have no affiliations with or involvement in any organisation or entity with any financial interest or non-financial interest in the subject matter or materials discussed in this manuscript. The authors have no financial or proprietary interests in any material discussed in this article.
: This is an observational study. No ethical approval is required.