Article History
Received: 22 March 2019
Accepted: 6 November 2019
First Online: 26 November 2019
Ethics approval and consent to participate
: All procedures performed in the study 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 or comparable ethical standards. Written consent for data processing was obtained from each patient. Our study was approved by the local ethics committee. For further questions please contact ethics committee under the following address: Ethikkommission, Universität Regensburg, 93040 Regensburg, Germany, E-Mail: ExternalRef removed.
: The clinical datasets were anonymized; individual consent for publication was not required by the ethics committee.
: All authors declare that they have no competing interests.