Received: 16 September 2021
Accepted: 1 February 2022
First Online: 15 February 2022
: This study was approved by the Ethics Committee of the Saarland Medical Association (approval number 243/14) and was in accordance with the 1964 Helsinki declaration and its later amendments.
: Written informed consent was obtained from all patients.
: The authors declare no competing interests.The authors alone are responsible for the content and writing of the paper.