Füchtmeier, Bernd
Doblinger, Matthias
Müller, Franz
Article History
Received: 18 December 2019
Accepted: 1 April 2020
First Online: 16 April 2020
Compliance with ethical standards
: The study was approved by our institutional review board and performed according to the standards of the Declaration of Helsinki. Verbal consent to participate in the study was obtained from all contacted patients.
: The authors declare that they have no conflict of interest.