Received: 9 March 2020
Accepted: 15 June 2020
First Online: 27 June 2020
Compliance with ethical standards
: All authors state no conflict of interest.
: The study was approved by the local ethical committee in conformance to the Declaration of Helsinki.
: For the retrospective analysis in this study, no informed consent was required. Written informed consent was however obtained from all patients who participated in the prospective outcome analysis.