Received: 23 April 2020
Accepted: 11 September 2020
First Online: 17 November 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Rheinische Friedrich-Wilhelm-Universität, Medizinische Fakultät, on May 30th, 2017. All patients gave informed, written consent to participate.
: Not applicable.
: The authors report no conflicts of interest in this work.