Carl, Barbara http://orcid.org/0000-0003-3661-9908
Bopp, Miriam http://orcid.org/0000-0003-1574-7572
Pojskic, Mirza http://orcid.org/0000-0002-6123-5589
Voellger, Benjamin http://orcid.org/0000-0001-8615-5393
Nimsky, Christopher http://orcid.org/0000-0002-8216-9410
Article History
Received: 25 March 2018
Accepted: 27 August 2018
First Online: 31 August 2018
Compliance with ethical standards
:
: Ch. Nimsky has received a speaker honorarium from Brainlab. B. Carl, M. Bopp, M. Pojskic, and B. Voellger declare that they have no conflict of interest.
: For this type of study, formal consent is not required.
: Informed consent was obtained from all individual participants included in the study.