Funding for this research was provided by:
Received: 9 March 2020
Accepted: 10 April 2020
First Online: 18 May 2020
Ethics approval and consent to participate
: Ethics Committee Approval, No. 56/18, was provided under the Ethics committee of the Saarland Medical Association, with date of approval 04.03.2019. Informed consent will be obtained from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.