Funding for this research was provided by:
Forschungspool Fakultät VI, Carl von Ossietzky University Oldenburg (2014-II, 2014-II)
Carl von Ossietzky Universität Oldenburg
Received: 28 July 2021
Accepted: 18 April 2022
First Online: 9 May 2022
: The study and all the pertaining documents were approved by the medical ethics committee of the Carl von Ossietzky University Oldenburg (No: 59/2014). The study was carried out in accordance with relevant guidelines and regulations, i.e., the Declaration of Helsinki and standards of Good Clinical and Scientific Practice. Informed consent to participate was obtained from all patients.
: No individual data was included in any form.
: The authors declare that they have no competing interests.