Funding for this research was provided by:
This project was supported by LIFE - Leipzig Research Center for Civilization Diseases, University of Leipzig and funded by means of the European Social Fund and the Free State of Saxony. (ESF-NWGII-P8)
Received: 6 February 2019
Accepted: 18 November 2019
First Online: 29 November 2019
Ethics approval and consent to participate
: The authors assert that all procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation. We obtained ethical approval for the study from the ethics committee of the Medical Faculty of the University of Leipzig (Germany). In accordance with the Declaration of Helsinki, all participants gave written informed consent to participate in the study.
: Not applicable.
: The authors declare that they have no competing interests.