Hussain, Timon http://orcid.org/0000-0003-4256-232X
Lang, Stephan
Haßkamp, Pia
Holtmann, Laura
Höing, Benedikt
Mattheis, Stefan
Article History
Received: 25 September 2019
Accepted: 9 December 2019
First Online: 1 January 2020
Compliance with ethical standards
: The retrospective study was approved by the ethical committee of the University of Duisburg-Essen.
: SL and SM received speaker fees and travel reimbursement from Medrobotics Corporation.
: The retrospective study was approved by the ethical committee of the University of Duisburg-Essen.
: Not applicable.