Received: 27 April 2021
Accepted: 24 June 2021
First Online: 3 July 2021
: Ethics Committee approval was not necessary for this study (waiver no. 2021-00215 issued by the Ethics Committee of eastern Switzerland). All patients gave their informed consent to participate in this study.
: All patients gave their informed consent for publication of this study.
: The authors declare that they have no competing interests.