Funding for this research was provided by:
Accepted: 15 July 2021
First Online: 26 July 2021
: Katrin Bahlinger, Tania M. Lincoln and Annika Clamor declare that they have no conflict of interest.
: All procedures performed in the study were in accordance with the provisions of the World Medical Association Declaration of Helsinki (as revised in 2013). The study received approval by the local ethics committee of the Universität Hamburg.
: Informed consent was obtained from all individual participants included in the study.
: No animal studies were carried out by the authors for this article.