Funding for this research was provided by:
Received: 3 July 2020
Accepted: 29 October 2020
First Online: 4 November 2020
Ethics approval and consent to participate
: The study was approved by the Ethics committee of the Justus-Liebig-University Giessen, Germany (ref. no. 71/18). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments. All patients undersigned informed consent to use their diagnostic records for scientific studies.
: Not applicable.
: The authors declare that they have no competing interests.