El Refaee, Ehab
Marx, Sascha
Rosenstengel, Christian
Baldauf, Joerg
Schroeder, Henry W. S.
Article History
Received: 29 July 2019
Accepted: 23 October 2019
First Online: 21 November 2019
Compliance with ethical standards
:
: The content of this manuscript has never been presented or published previously.
: Henry W. S Schroeder is consultant to Karl Storz GmbH & Co. KG, Tuttlingen, Germany. The rest of the authors declare that they have no conflict of interest.
: For our prospectively collected database, informed consent was obtained from all individual participants included in the study.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (name of institute/committee) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.