Siekmann, Max http://orcid.org/0000-0002-7396-149X
Lothes, Thomas
König, Ralph
Wirtz, Christian Rainer
Coburger, Jan http://orcid.org/0000-0002-3677-8258
Article History
Received: 17 September 2017
Accepted: 13 January 2018
First Online: 24 January 2018
Compliance with ethical standards
:
: Jan Coburger and Ralph König work as consultants for Brainlab and have received speaker fees. The other authors have declared no personal conflict of interest.